In summary, we conclude that, to be entitled to receive discovery beyond merely recovering items that the prosecutor had provided to defense counsel before trial, defendants must show they have a reasonable basis to believe that the specific materials they seek actually exist. To obviate one concern that petitioner has expressed, we note that a reasonable basis to believe that the prosecution had possessed the materials in the past would also provide a reasonable basis to believe the prosecution still possesses the materials. Petitioner need not make some additional showing that the prosecution still possesses the materials, a showing that would be impossible to make. (However, as we explained in Steele, 1054.9 "imposes no preservation duties that do not otherwise exist." [Steele, supra, 32 Cal.4th at p. 695.].) We disapprove People v. Superior Court (Maury), supra, 145 Cal.App.4th 473, and Curl v. Superior Court, supra, 140 Cal.App.4th 310, to the extent they are inconsistent with this opinion.* * *
Accordingly, we conclude the prosecution is not required to provide discovery of materials from the out-of-state law enforcement agencies of this case that the prosecution does not itself possess.
Congrats to Ward Campbell and Eric Christoffersen, who mostly won this case.