Phillip and Claudell White, husband and wife, appeal their convictions on heroin charges. Both were convicted by a jury of conspiracy to possess heroin with intent to distribute in violation of 21 U.S.C. § 846, and Phillip also was found guilty of a substantive count of heroin possession with intent to distribute in violation of 21 U.S.C. § 841(a)(1). Each received a fifteen-year sentence and fifteen-year special parole term for conspiracy, and Phillip received an additional six-year sentence, to be served consecutively, for the substantive offense.
Both challenge the conspiracy convictions on grounds of insufficient evidence. Clau-dell also claims certain prejudicial testimony was erroneously admitted, and Phillip asserts that the district court should have granted his motion for severance. Phillip also makes a “chain of custody” argument in challenging his substantive conviction. We agree that the conspiracy convictions must be reversed because of insufficient evidence; and accordingly need not address the other issues; however, we affirm Phillip’s conviction for the substantive offense.
I. FACTUAL BACKGROUND
These convictions were obtained largely through the efforts of two undercover agents for the Drug Enforcement Administration, Widener and Wendt, who worked closely with a confidential informant. The agents were initially led to the Whites by one Cornelius Braxton, who was indicted and tried along with the Whites. He arranged a deal between the agents and Clau-dell for July 21, 1976, in an El Paso bar. Another person — a “John Doe” — also was involved, but the deal never took place because of a nearby burglary that brought several uniformed police into the vicinity. According to Agent Widener, this aborted transaction involved marijuana.
About a month later, on August 31, a confidential informant named Oatis Leeper was instructed by the agents to try to make a heroin buy from either Claudell or Brax-ton. Leeper met one Larry Williams, a co-defendant who was acquitted of conspiracy, in another bar and discussed a possible purchase. From this conversation Leeper concluded that Williams was selling for Claudell, and he later bought a half-gram of heroin from Williams. On September 3 and 4, Leeper purchased small quantities of heroin from Phillip and discussed the possibility of selling for him.
Leeper met with Phillip again on September 7. Later in the day, during a ride in Claudell’s van, he discussed with her the possibility of dealing heroin. According to Leeper, Claudell thought he was right for the job but said that “things were kind of hot and she couldn’t afford it at the time.” Phillip was not present during this conversation, and Claudell had not participated in any of Phillip’s “negotiations” with Leeper. The next day Leeper again discussed dealing with Claudell, but she repeated that she could not afford to have him deal for her.
Although DEA agents conducted extensive surveillance during this period, the only direct testimony concerning the alleged conspiracy came from informant Leeper.
II. THE SUBSTANTIVE OFFENSE
The basis of this count against Phillip was Leeper’s purchase on September 4. Phillip contends that there was not an adequate chain of custody regarding the heroin that the DEA agents took from Leeper after the buy had been made. He relies on the fact that the agents did not personally observe the transaction and that Leeper could possibly have obtained the heroin from another source.
*266 This is not a routine chain of custody situation in which the chain is broken between seizure of the evidence from the accused and a subsequent trial. Rather, the alleged break occurred before the government came into possession of the heroin.
The more typical chain of custody cases make clear that the mere possibility of a break in the chain does not render the physical evidence inadmissible, but raises the question of the weight to be accorded by the jury to the sufficiency of the proof of a chain of custody.
United States v. Ellis,
Here the alleged break is that government agents did not witness the deal’s consummation. Moreover, there is nothing in the record indicating that marked bills supplied by the government were found in Phillip’s possession after the sale.
Compare United States v. Amaro,
Allowing the informant’s testimony to supply the missing link is no different than allowing connection of physical evidence with a defendant to be shown by circumstantial evidence.
See United States v. Turner,
III. THE CONSPIRACY
Having unsuccessfully moved for a judgment of acquittal in the district court, Phillip and Claudell now urge that the evidence was insufficient to support their conspiracy convictions. The question is whether the evidence, viewed in a light most favorable to the government, could be accepted by a reasonably-minded jury as adequate and sufficient to support the conclusion of defendants’ guilt beyond a reasonable doubt.
United States v. Warner,
The essential elements of a conspiracy are an agreement by two or more persons to commit an offense against the United States and an overt act by one of them in furtherance of the conspiracy.
United States v. Warner, supra; United States
v.
Isaacs,
The difficulty in the instant case lies in proving the existence of a conspiracy. The government’s theory apparently 3 is that Phillip and Claudell were involved in a heroin conspiracy because: (1) Claudell sells heroin; (2) Phillip sells heroin; and (3) they are married. This theory cannot withstand careful scrutiny.
Evidence of the conspiracy’s existence is, to put it charitably, minimal. DEA Agent Widener testified that co-defendant Brax-ton identified the Whites as his “connection” and arranged a “buy” on July 21, though this transaction — which involved marijuana rather than heroin — was aborted. Informant Leeper testified that he had met with co-defendant Williams on August 31 and that Williams said he was “in the bag,” which Leeper interpreted as meaning Williams was selling heroin for Claudell. On September 3 and 4, Leeper purchased heroin from Phillip and discussed with him the possibility of Leeper’s becoming a dealer. Leeper had similar discussions with Claudell on September 7 and 8. Claudell and Phillip are married; they live together and frequent the same bar, which one of them apparently owns or manages. These bits and pieces of evidence add up to no more than ground for conjecture and suspicion that a conspiracy existed, not proof beyond a reasonable doubt.
See United States v. Palacios,
It is clear that Braxton’s statement is co-conspiratorial hearsay and is not admissible to prove the existence of the conspiracy.
United States v. James,
*268
Moreover, it is well-settled that a conspiracy cannot be proven solely by family relationship or other types of close association.
United States v. Palacios, supra; United States v. Ritz,
The only evidence of the conspiracy, then, is Phillip’s sale of heroin to Leeper and Leeper’s separate conversations with Clau-dell and Phillip regarding his possible participation in the “business” as a dealer. Drug transactions alone do not constitute a conspiracy, and it would be an exercise in sheer speculation to conclude from Leeper’s account of his discussions with Phillip and Claudell that a heroin conspiracy existed. Although such speculation may be reasonable, it does not constitute proof beyond a reasonable doubt. As we said in United States v. Palacios, supra at 1365, “[ j Juries must not be permitted to convict on suspicion and innuendo.”
Nor is a conspiracy shown to exist between Phillip, Claudell, and the other alleged co-conspirators. The only connection between the Whites and Braxton was the first arranged “deal” on July 21, which fell through when police were summoned in response to a nearby burglary. Although success of the conspiracy is not required,
United States v. Villarreal,
Because determination of a defendant’s guilt rests exclusively with the jury,
United States
v.
Black,
IV. CONCLUSION
Phillip White’s conviction for possession of heroin with intent to distribute is affirmed. His conviction for conspiracy to so possess heroin is reversed, as is the conviction of Claudell White for the same offense. We remand the case to the district court *269 with directions that the indictment be dismissed as to the conspiracy count. 6
AFFIRMED in part, REVERSED in part, and REMANDED.
Notes
. Other decisions phrase the test as whether a reasonably-minded jury could find the evidence inconsistent with every hypothesis of innocence.
E. g., United States
v.
Prout, supra; United States v. Moore,
. Several Fifth Circuit cases have confused the situation, having proceeded on the assumption that an overt act must be alleged and proved under § 846 and its companion statute dealing with conspiracy to import drugs, 21 U.S.C. § 963, just as under the general conspiracy statute, 18 U.S.C. § 371. The problem is discussed in United States v. Palacios, supra (citing cases).
. We say “apparently” because the government’s brief on this question is woefully inadequate. Discussion of this issue, which is central to the case, occupies only two pages of the government’s brief and consists largely of string citations to basic conspiracy principles. No references to the record are provided. We hope that, in the future, the government will respond more precisely to the issues.
. In other cases, witnesses have been allowed to explain their understanding of terms or phrases, but under circumstances radically different from those in the instant case. For example, in
United States v. Cioffi,
We also note that the prosecutor emphasized this testimony in closing argument, stating at one point that “williams stated that he was selling heroin for Claudell Martin White.” Tr. *268 448. Actually, Williams said nothing of the sort, for Leeper interpreted “in the bag” to mean that Williams was selling for Claudell. Had Leeper been specifically asked whether Williams told him he was selling for Claudell, the answer might well have been a negative one. Indeed, this was the case when a similar question was posed to Leeper about his conversation with Braxton. Tr. 38-39.
. Our surprise stems from the heavy reliance placed by the prosecution on Leeper’s “in the bag" explanation that Williams was selling heroin for Claudell. See note 4, supra, and accompanying text.
. Since
United States v. Musquiz,
