The investigation reveals a decades-old secret: Tommy Grazetti actually died years ago of natural causes, and Ledo Wright assumed his identity to avoid the Vietnam War draft.
Forensic evidence, including rare Frank Sinatra vinyl tracings found on Alison's body, leads the team to a Sinatra impersonator. The Resolution [S13E4] It Was a Very Good Year
In the episode " It Was a Very Good Year " (Season 13, Episode 4), a deeply personal case hits home for CSI Greg Sanders. [S13E4] It Was a Very Good Year