When a drug counselor's debit card is used one year after his death, Lilly and the team reopen the 2005 case.

During the investigation, Lilly is strangely drawn to the victim, Joseph Shaw, a popular drug counselor who was killed two days before he was set to testify against one of his students. Lilly becomes so fixated on Joseph that she takes home a photo of him from the evidence and places it on her nightstand at home. Normally a "by the book" investigator, Lilly becomes so enthralled with the victim that she breaks some procedural rules, putting herself and the other investigators in danger.