OPINION
¶ 1 Patricia Morehart and Colleen Duffy (“Petitioners”) challenge the trial court’s order granting an ex parte hearing to William Craig Miller (“Defendant”) for the purpose of addressing mitigation matters. We hold that Petitioners have the right to attend the hearing and we therefore accept jurisdiction and grant relief.
BACKGROUND
¶ 2 Defendant was indicted on five counts of first-degree murder, and the State subsequently filed a notice of intent to seek the death penalty. Petitioners, who are family members of individuals whom Defendant allegedly murdered, are “victims” under Article 2, Section 2.1(C), of the Arizona Constitution, and Arizona Revised Statutes (“A.R.S.”) section 13-4401(19) (2010).
¶ 3 Defendant filed a motion for an ex parte hearing, asserting that because the “issue has to do with the defense investigation into mitigation matters ... the State has no standing to be present during the hearing.” Petitioners objected on the grounds that (1) under the Victims’ Bill of Rights, any ex parte hearing that excludes a victim is unconstitutional; and (2) a victim has a constitutional and statutory right to attend any criminal proceeding at which a defendant has the right to be present. Following the presentation of oral argument at the “final trial management conference,” the court granted the motion and scheduled an “ex parte hearing re return of summons.”
¶4 Petitioners then filed this petition for special action. After briefing, we accepted jurisdiction and issued an order vacating the trial court’s decision granting Defendant’s request for an ex parte hearing. We stated that a written decision would follow, which we provide here.
JURISDICTION
¶ 5 We may accept special action jurisdiction when the case presents a pure
*271
question of law for which there is no “equally plain, speedy, and adequate remedy by appeal[.]”
See
Ariz. R.P. Spec. Act. 1(a);
see also State ex rel. Pennartz v. Olcavage,
DISCUSSION
¶ 6 Petitioners argue that the trial court’s decision to grant Defendant an ex parte hearing violates their constitutional and statutory right to “be present at ... all criminal proceedings where the defendant has the right to be present.” Ariz. Const, art. 2, § 2.1(A)(3); see also A.R.S. § 13^420 (2010). Defendant counters that notwithstanding these provisions, ex parte hearings are permitted because they are expressly acknowledged in Arizona Rule of Criminal Procedure 15.9(b), which provides that “[n]o ex parte proceeding, communication, or request may be considered pursuant to this rule unless a proper showing is made concerning the need for confidentiality.” (Emphasis added.) He argues that defense counsel has a duty to fully investigate all mitigating factors and confidentiality is required during the mitigation investigation in order to protect against premature revelation of strategies being explored by the defense. The trial court likewise rested its determination of the need for an ex parte proceeding on the mitigation aspect of the request, stating:
I am going to address this matter ex parte that deals with out-of-state summons that have been issued for the mitigation purposes. So, those types of things I believe it’s proper to do ex parte, and I don’t believe that I’m violating any victims’ rights by doing so.
I’m just telling you that it’s the Court’s position that if it deals with mitigation issues, the discovery and the procurement of mitigation, that the Court can handle and should handle those ex parte, and that under Arizona law, the victims do not have the right to be present and receive copies of those pleadings. 1
¶ 7 We disagree with the trial court’s conclusion that under Arizona law issues relating to mitigation discovery and procurement are appropriately handled on an ex parte basis. Nor can we accept Defendant’s suggestion that Rule 15.9(b) provides sound legal justification for conducting an ex parte hearing under such circumstances as a matter of course. The Arizona Constitution unquestionably gives victims the right to be present at “all criminal proceedings,”
2
and we are “required to follow and apply the plain language of the Victims’ Bill of Rights in interpreting its scope.”
State ex rel. Romley v. Superior Court,
¶ 8 Our conclusion is consistent with
State v. Apelt,
¶ 9 Defendant nonetheless contends there has been a “sea change” in criminal law since
Apelt
was decided, indicating that ex parte proceedings are appropriate when necessary to protect due process, effective assistance of counsel, the right against self-incrimination, equal protection, and the attorney-client privilege. In support, Defendant relies summarily on a number of cases from other jurisdictions.
See, e.g., Williams v. State,
¶ 10 Defendant further contends that allowing Petitioners to be present at the hearing on mitigation matters will deny him his Sixth Amendment right to effective assistance of counsel because it “will chill defense counsel’s efforts to fully investigate mitigation” and “could lead the defense to abandon avenues of potential mitigation” in order to avoid putting “the [Sjtate or Petitioners on notice of the issue and/or existence of records” that it seeks to examine, apparently for mitigation purposes. 4 In light of the broad disclosure requirements of Rule 15(h), and absent any argument or facts to support a conclusion that disclosure of mitigating evidence at this stage of the proceedings would be prejudicially premature, we reject Defendant’s assertions.
¶ 11 We acknowledge, however, that prior decisions of this court have recognized the need in certain instances for weighing the interests between victims’ and defendants’ constitutional rights.
See, e.g., State v. Connor,
CONCLUSION
¶ 12 Based on the foregoing, we vacate the trial court’s order dated June 4, 2010, granting Defendant’s motion for an ex parte hearing relating to mitigation issues.
Notes
. Whether Petitioners have the right to receive copies of court filings related to mitigation matters is not an issue before us.
. As provided in A.R.S. § 13-4401(7), a criminal proceeding is "any hearing, argument or other matter that is scheduled by and held before a trial court but does not include any deposition, lineup, grand jury proceeding or other matter that is not held in the presence of the court.” Defendant argues that the return of summonses is not the "type of proceeding” envisioned by Rule 15.9(b). He asserts that such a proceeding would involve "counsel and the court communicating,” and suggests such “communication” is not necessary in an ex parte proceeding regarding the return of subpoenas or summonses. Defendant does not, however, explain what counsel and the court would be doing at such a hearing if not communicating in some way about the return of the summonses at issue.
. Similar reasoning applies here. Under Rule 15.2(h)(1)(a), within 180 days after receiving the state’s disclosure, defense counsel in a capital case is required to disclose "[a] list of all mitigating circumstances intended to be proved.” Thus, Defendant’s suggestion that he has an unqualified right to confidentiality relating to mitigation matters lacks supporting legal authority.
. Defendant cites American Bar Association Guidelines for the Appointment and Performance of Defense Counsel in Death Penalty Cases (2003),
Rompilla v. Beard,
