Highlights from the Seventeenth Episode of Season 13 of CSI

David Phillips begrudgingly returns to his old high school for a reunion to find the former prom queen dead in a storage room.

"Death of the Class" Episode 17 in Season 13

D.B. Russell (Ted Danson, left), Julie Finlay (Elisabeth Shue, middle) and David Phillips (David Berman) all stand over a victim from Phillips high school reunion, on CSI CRIME SCENE INVESTIGATION, Wednesday, March 20 (10:00-11:00 PM, ET/PT on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

"D.B's not going to like that you flash froze his mushrooms"

Photo title by Chelsey T. from Facebook!

"Death of the Class" Episode 17 in Season 13

David Phillips (David Berman, left) uses his energies in helping David Hodges (Wallace Langham) go through tests from his high school reunion, on CSI CRIME SCENE INVESTIGATION, Wednesday, March 20 (10:00-11:00 PM, ET/PT on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

"Death of the Class" Episode 17 in Season 13

Greg Sanders (Eric Szmanda) focuses in on an item he has in some tweezers, on CSI CRIME SCENE INVESTIGATION, Wednesday, March 20 (10:00-11:00 PM, ET/PT on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

"Death of the Class" Episode 17 in Season 13

Dr. Robbins (Robert David Hall, left) has kind words for David Phillips (David Berman) as they look over a body, on CSI CRIME SCENE INVESTIGATION, Wednesday, March 20 (10:00-11:00 PM, ET/PT on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.

"Death of the Class" Episode 17 in Season 13

David Phillips (David Berman) looks over a body as he remembers his high school days, on CSI CRIME SCENE INVESTIGATION, Wednesday, March 20 (10:00-11:00 PM, ET/PT on the CBS Television Network. Photo: Robert Voets/CBS ©2013 CBS Broadcasting, Inc. All Rights Reserved.