*208 Opinion
California recognizes two marital privileges. First, a spouse may refuse to testify against the other spouse (spousal testimony privilege). (Evid. Code, § 970.) Second, a spouse may refuse to disclose or may prevent the other spouse from disclosing confidential communications between them during their marriage (marital communications privilege). (Evid. Code, § 980.) Despite recognizing these privileges, the Legislature has enacted numerous exceptions. (See Evid. Code, §§ 972, 985.) Today, we consider the scope of one of the exceptions common to both marital privileges in the context of the spousal testimony privilege.
In this case, defendant Robert Gene Sinohui contends the trial court erroneously compelled his wife to testify about his crimes against a third person pursuant to the exception to the spousal testimony privilege codified in Evidence Code section 972, subdivision (e)(2) (section 972(e)(2)). As relevant here, section 972(e)(2) precludes a wife from asserting the spousal testimony privilege in “[a] criminal proceeding in which” the husband “is charged with: [1] . . . [10 • • • [a] crime against the person or property of a third person committed in the course of committing a crime against the person or property of” his wife. According to defendant, this exception did not apply because the accusatory pleading did not charge defendant with a crime against his wife and because he did not commit the crimes against the third person “in the course of committing” a crime against his wife. We disagree and affirm the trial court’s ruling.
Facts
Prior to marrying defendant, Gina Loiaza had dated Gabriel Terrazas, the victim, for about a year. At some point during the marriage, Loiaza began to see Terrazas again. Loiaza and Terrazas were “close friends” and would meet to “talk and kiss.” Loiaza never told defendant about her relationship with Terrazas because she did not believe he would approve and because “he was possessive.”
One evening, Loiaza met Terrazas at his home. After a brief stay, they left in her car for a secluded spot in an industrial complex nearby. A few minutes later, they noticed a car behind them. This other car eventually pulled alongside their car, and the driver pointed a gun at Loiaza. Loiaza stopped her car and got out. Two men got out of the other car and ordered Terrazas out of Loiaza’s car. As one of the men tried to force Terrazas into the trunk of Loiaza’s car, the other man grabbed Loiaza and pushed her out of the way so she could not see Terrazas. At some point, Loiaza recognized defendant *209 as one of the two men and the other car as belonging to defendant’s sister-in-law. After hearing and seeing a brief straggle and hearing a gunshot, Loiaza saw Terrazas in the trunk of her car. Defendant then drove away in Loiaza’s car with Terrazas in the trunk, and left Loiaza with the other man.
Loiaza told the other man she was going to drive home and got into the car left by defendant. The other man got into the passenger seat, and Loiaza drove to the apartment she shared with defendant. When they arrived, defendant was standing outside. Ignoring defendant, Loiaza ran into the apartment, where she saw defendant’s sister-in-law. Loiaza then checked on her children and fell asleep on the couch. Although Loiaza dozed “on and off,” she saw defendant dressed in several different sets of clothes. During the night, she also saw him wash her car and hand his sister-in-law a bag of clothes.
Early the next morning, defendant woke Loiaza and told her they had to “go for a ride.” Loiaza agreed because she was afraid and did not want to upset defendant. Defendant, Loiaza, their three children, and the man who had helped defendant abduct Terrazas got into Loiaza’s car. When Loiaza got in, defendant told her Terrazas was in the trunk. Defendant then drove them to a drainage ditch. Defendant and the other man got out of the car and unloaded something. They told Loiaza not to look. Although Loiaza stayed in the car and could not see what was being unloaded, she assumed it was Terrazas’s body.
After they returned to the apartment, defendant washed the car again. He then told Loiaza to get gas and told the other man to accompany her. At the gas station, Loiaza noticed blood and water leaking from the trunk.
The next day, defendant and Loiaza left their apartment with their children but without most of their belongings. That same day, a high school student discovered Terrazas’s body in a drainage ditch. An autopsy of Terrazas’s body revealed multiple braises, 43 stab wounds and one gunshot wound to the neck. A forensic analysis of the trunk of Loiaza’s car uncovered bloodstains consistent with Terrazas’s—but not defendant’s—blood type.
After leaving their apartment, defendant and Loiaza stayed with various friends and relatives. The police eventually arrested defendant, 25 days after discovering Terrazas’s body. The information charged defendant with kidnapping and murdering Terrazas (Pen. Code, §§ 187, subd. (a), 207, subd. (a)), but did not charge him with any crimes against Loiaza. The information also alleged enhancements for use of a firearm and knife in the commission *210 of murder (Pen. Code, §§ 1192.7, subd. (c)(8), 12022, subd. (b)(1)), and a prior felony conviction (Pen. Code, § 667.5, subd. (b)).
As the only available eyewitness to the events surrounding Terrazas’s kidnapping and murder, Loiaza was the main witness against defendant. Before trial, Loiaza asserted the spousal testimony privilege and refused to testify. (See Evid. Code, § 970.) The trial court, however, compelled her testimony pursuant to the exception to the privilege codified in section 972(e)(2). A jury found defendant guilty of murder and kidnapping but acquitted him of the enhancements. After finding the prior conviction allegation to be true, the court sentenced defendant to 26 years to life. Defendant appealed, contending, among other things, that the court erroneously compelled his wife’s testimony. 1
The Court of Appeal reversed. Concluding that Terrazas—and not Loiaza —was the “primary victim” of defendant’s crimes, the court held that section 972(e)(2) did not apply. Because Loiaza’s testimony was critical, the court found the erroneous introduction of her testimony prejudicial, and did not reach any other issues. We granted review to determine whether the exception to the spousal testimony privilege contained in section 972(e)(2) applies in this case and conclude it does.
Discussion
I
The rule prohibiting a spouse from testifying against another spouse has a long history. It originated in medieval times and apparently “sprang from two canons of medieval jurisprudence: first, the rule that an accused was not permitted to testify in his own behalf because of his interest in the proceeding; second, the concept that husband and wife were one, and that since the woman had no recognized separate legal existence, the husband was that one. From those two now long-abandoned doctrines, it followed that what was inadmissible from the lips of the defendant-husband was also inadmissible from his wife.”
(Trammel v. United States
(1980)
The spousal testimony privilege has evolved considerably from these anachronistic roots (see Frost,
Updating the Marital Privileges: A WitnessCentered Rationale
(1999) 14 Wis. Women’s L.J. 1, 12-15 [discussing some
*211
of the commonly recognized exceptions to the spousal testimony privilege]), and many jurisdictions continue to recognize some form of this privilege (see
Trammel, supra,
In California, all privileges are statutory. (See Evid. Code, § 911, subd. (a) [“Except as otherwise provided by statute: [10 (a) No person has a privilege to refuse to be a witness”].) Evidence Code section 970 codifies the spousal testimony privilege and provides that “[e]xcept as otherwise provided by statute, a married person has a privilege not to testify against his spouse in any proceeding.” Evidence Code section 972 then defines numerous exceptions. Today, we determine the scope of the exception found in section 972(e)(2).
Section 972(e)(2) states that “[a] married person does not have a privilege” under section 970 in “[a] criminal proceeding in which one spouse is charged with: [10 • • • [10 • • • tal crime against the person or property of a third person committed in the course of committing a crime against the person or property of the other spouse, whether committed before or during marriage.” In determining the scope of this exception, we apply our well-established mies of statutory construction.
“When construing a statute, we must ‘ascertain the intent of the Legislature so as to effectuate the purpose of the law.’”
(Wilcox v. Birtwhistle
(1999)
In addition to the rules of statutory construction, we are also guided by the rules governing evidentiary privileges. Because privileges “prevent the admission of relevant and otherwise admissible evidence,” they “should be narrowly construed.”
(People v. McGraw
(1983)
Upon applying these rules, we conclude the trial court properly compelled the testimony of defendant’s wife pursuant to section 972(e)(2). In reaching this conclusion, we find that: (1) a court may compel spousal testimony pursuant to section 972(e)(2) even if no accusatory pleading charges the defendant with a crime against his or her spouse; and (2) the defendant commits a crime against a third person “in the course of committing a crime” against his or her spouse as contemplated in section 972(e)(2) if the crimes are part of a continuous course of criminal conduct and have some logical relationship to each other.
II
Defendant contends the exception to the spousal testimony privilege contained in section 972(e)(2) does not apply unless an accusatory pleading charges the defendant with a crime against his or her spouse. The People counter that section 972(e)(2) contains no such requirement. We agree with the People.
Under section 972(e)(2), a spouse may not refuse to testify against the defendant spouse if the defendant is “charged with: [!]...[!]... [a] crime against the person or property of a third person committed in the course of committing a crime against the person or property of the other spouse . . . .” (Italics added.) The plain meaning of section 972(e)(2) *213 requires that the accusatory pleading charge defendant with a particular type of crime “against ... a third person”—and not with a crime against his spouse.
Reading section 972(e)(2) in light of other exceptions to the spousal testimony privilege offers additional support for this interpretation. (See
Wilcox, supra,
Our review of the relevant policy considerations provides additional support. The purpose of the spousal testimony privilege is to preserve marital harmony. (See Tent. Recommendation: Study Relating to the Uniform Rules Evid. (Feb. 1964) 6 Cal. Law Revision Com. Rep. (1965) p. 242 [“The privilege not to testify ... is recommended because compelling a married person to testify against his spouse would in many cases seriously disturb if not completely disrupt the marital relationship of the persons involved”].) In balancing this purpose against the countervailing principle that “ ‘ “the public . . . has a right to every man’s evidence” ’ ”
(Trammel, supra,
The cases cited by defendant are inapposite. Both
People
v.
Ford
(1964)
People v. Pittullo
(1953)
For the same reason,
Fortes
v.
Municipal Court
(1980)
Ill
Defendant also contends section 972(e)(2) does not apply because defendant did not kidnap or murder Terrazas “in the course of committing a crime” against his wife. According to defendant, the phrase “in the course of’ establishes that the exception does not apply if the crime against the spouse is incidental to the crime against the third person. Thus, he argues that the spouse must be the defendant’s primary victim—not the third person. We disagree and conclude section 972(e)(2) applies whenever the crime against the third person is part of the same continuous transaction as and bears some logical relationship to the crime against the spouse.
As an initial matter, the plain meaning of this phrase provides little guidance. The phrase “in the course of” “is often” just a wordy way of saying “during or while.” (Garner, Dict, of Modem American Usage (1998) p. 382.) Although this definition implies some temporal connection between the two crimes, it does not appear to designate the crime against the spouse as the primary crime. On the other hand, the phrase “in the course of’ has *216 also been defined as “in the process of’ or “during the progress of.” (3 Oxford English Diet. (2d ed. 1989) p. 1055.) This definition arguably suggests that the crime against the third person must be secondary to the crime against the spouse.
Because the statutory language is ambiguous, we look to extrinsic aids for guidance, beginning with the legislative history.
(Woodhead, supra,
Code of Civil Procedure former section 1881, subdivision 1, stated in relevant part that “[a] husband can not be examined for or against his wife without her consent. . . [except in a] criminal action or proceeding ... for a crime committed against another person by a husband or wife while engaged in committing and connected with the commission of a crime by one against the other . . . .” (Stats. 1939, ch. 129, § 5, pp. 1246-1247, italics added.) Given that the Legislature intended to restate this exception in section 972(e)(2) (see Cal. Law Revision Com. com., reprinted at 29B pt. 3 West’s Ann. Evid. Code, supra, foil. § 985, p. 289), it apparently used the phrase “in the course of’ as shorthand for the phrase “while engaged in committing and connected with” (compare Evid. Code, § 972(e)(2) with Code Civ. Proc., former § 1881, subd. 1, Stats. 1939, ch. 129, § 5, p. 1246). Thus, we may look to this language in Code of Civil Procedure former section 1881, subdivision 1, for guidance in interpreting the phrase “in the course of’ in Evidence Code section 972(e)(2). As explained below, this language strongly suggests that the Legislature did not intend to limit the exception to cases where the spouse is the primary victim.
Code of Civil Procedure former section 1881, subdivision 1 used two criteria to define the requisite relationship between the crime against the
*217
third person and the crime against the spouse. First, the defendant must have committed the crime against the third person “while engaged in committing” the crime against the spouse. (Code Civ. Proc., former § 1881, subd. 1, added by Stats. 1939, ch. 129, § 5, p. 1246 and repealed by Stats. 1965, ch. 299, § 64, p. 1361.) The word “while”—which means “during the time that” or “as long as”—implies that the two crimes must have a temporal relationship. (Webster’s 10th New Collegiate Diet. (1993) p. 1347 (Webster’s).) Other cases interpreting similar language in other contexts further clarify the requisite temporal relationship. These cases construe the temporal requirement implied by such language as establishing a continuous transaction test. (See
People
v.
Alvarado
(2001)
Second, the defendant’s crime against the third person must have been “connected with” the crime against the spouse. (Code Civ. Proc., former § 1881, subd. 1, Stats. 1939, ch. 129, § 5, p. 1246.) The word “connected” indicates that the two crimes must have had some logical link or relationship to each other. (Webster’s, supra, at p. 244 [defining “connected” as “1: joined or linked together 2: having the parts or elements logically linked together”].) Thus, in addition to imposing a continuous transaction test, Evidence Code section 972(e)(2) requires that the crime against the third person and the crime against the spouse bear some logical relationship to each other. It does not, however, require that the crime against the third person be incidental to the crime against the spouse or that the spouse be the primary victim of the offenses. Indeed, the requisite relationship between the two crimes need not be close; they need only have some nontemporal connection to each other.
Such an interpretation fits nicely with the relevant public policy considerations. Marital privileges, like other privileges, should be “accepted ‘only to the very limited extent that permitting a refusal to testify or excluding relevant evidence has a public good transcending the normally predominant principle of utilizing all rational means for ascertaining truth.’ ” (Trammel,
supra,
Indeed, we have already endorsed this logic in interpreting the exception to the spousal testimony privilege for crimes against the spouse. (See Evid. Code, § 972, subd. (e)(1).) In Ford, the husband kidnapped his wife and shot a police officer during the kidnapping. (Ford, supra, 60 Cal.2d at pp. 782-784.) At trial, the husband sought to preclude his wife from testifying about the shooting. (Id. at p. 785.) The trial court overruled the husband’s objection, and we affirmed. (Ibid.) We held that the exception to the spousal privilege for “ ‘a crime committed . . . against the person ... of ’ ” the wife applied because the husband’s crime against his wife—kidnap ping—“was still being committed when the shooting occurred.’’'’ (Ibid., italics added.) Therefore, the wife properly testified “not only as to the kidnaping but also as to the circumstances leading up to and surrounding the shooting of’ the officer. (Ibid.) Given this expansive interpretation of the exception for crimes against the spouse, 4 we see no reason to narrowly construe section 972(e)(2) in the manner proposed by defendant.
*219
Our interpretation also comports with the Mississippi Supreme Court’s interpretation of a statute with language virtually identical to section 972(e)(2). In
Meeks
v.
State
(Miss. 1992)
The cases cited by defendant do not compel a different interpretation. In
Pittullo,
the Court of Appeal simply concluded that the husband’s assault against a third person occurred in the course of his assault against his wife.
(Pittullo, supra,
Fortes is also inapposite. In Fortes, the Court of Appeal simply held that section 972(e)(2) did not apply because the prosecution failed to make a prima facie showing that the defendant committed a crime against his spouse. (Fortes, supra, 113 Cal.App.3d at pp. 713-714.) Here, defendant does not dispute that the prosecution made a prima facie showing that he committed a crime against his wife. Thus, Fortes is unavailing.
Likewise,
People v. Resendez
(1993)
Finally,
People v. Green
(1980)
Thus, we conclude that Evidence Code section 972(e)(2) applies whenever the crime against the third person and the crime against the spouse (1) are part of a continuous course of criminal conduct, and (2) bear some logical relationship to each other. Under the uncontroverted evidence in this case, defendant undoubtedly committed a crime against his wife—i.e., false imprisonment (Pen. Code, § 236)—at the same time he kidnapped and murdered Terrazas. Defendant’s crimes against Terrazas and his wife occurred in close spatial proximity to each other. Finally, even looking at defendant’s crimes in the most favorable light, he committed the crime against his wife to facilitate his crimes against Terrazas. Under these facts, defendant’s crimes against his wife and Terrazas were undoubtedly part of a continuous course of criminal conduct. They were also more than sufficiently linked to satisfy the logical relationship requirement. Indeed, this case is not even close. Accordingly, the trial court properly compelled the wife’s testimony pursuant to Evidence Code section 972(e)(2).
Disposition
We reverse the judgment of the Court of Appeal and remand for further proceedings consistent with this opinion.
*221 George, C. J., Kennard, J., Baxter, J., Werdegar, J., Chin, J., and Moreno, J., concurred.
Appellant’s petition for a rehearing was denied August 14, 2002.
Notes
Under Evidence Code section 918, a spouse “may predicate error on a ruling disallowing a claim of privilege ... by his spouse under Section 970 or 971.”
(See, e.g.,
Young v. Superior Court, supra,
190 Cal.App.2d at pp. 761-764 [construing the statutory exception to marital privileges in criminal proceedings for a crime committed by one spouse against the other spouse];
People
v.
Schlette
(1956)
As relevant here, Code of Civil Procedure former section 1881, subdivision 1, precluded invocation of the spousal privilege in “a criminal action or proceeding ... for a crime committed against another person by a husband or wife while engaged in committing and connected with the commission of a crime by one [spouse] against the other [spouse] . . . .” (Stats. 1939, ch. 129, § 5, pp. 1246-1247.)
Our expansive interpretation of this exception is consistent with the interpretation given by many of our sister courts to analogous exceptions to the spousal testimony privilege. (See, e.g.,
Miller
v.
State
(1907)
