Vasquez

*1022 I.

INTRODUCTION

"[D]emonstrative evidence [is] offered to help a jury understand expert testimony or other substantive evidence...." ( People v. Duenas (2012) 55 Cal.4th 1 , 20, 144 Cal.Rptr.3d 820 , 281 P.3d 887 ( Duenas ).) Demonstrative *1023 evidence is "not offered as substantive evidence, but as a tool to aid the jury in understanding the substantive evidence." ( Id. at p. 25, 144 Cal.Rptr.3d 820 , 281 P.3d 887 .)

In this case, during the prosecutor's redirect examination of an alleged child molestation victim (P.C.), the trial court permitted the People to display to the jury an approximately twenty-foot long "timeline" of the alleged molestations that a therapist *28 created with P.C. in preparation for a prior proceeding in this case. The timeline contained detailed statements describing the alleged abuse written by the therapist at P.C.'s direction, together with dates and photographs of P.C. at various ages. 1 The court also permitted the prosecutor to directly question P.C. at trial about statements contained on the timeline.

On appeal, defendant Michael Vasquez contends that the trial court erred in permitting the jury to view the timeline and erred in…