CSI: Ekipa za očevid, Čvrste veze

After a two-year rampage, CASt suddenly disappeared and was never heard from... until now. Gil Grissom and his investigative team are called to investigate a murder that occurred with a modus operandi identical to that of a notorious criminal. But everything boils over when a reporter who made a name for himself writing about the original cases receives a letter from a person who claims to be CASt - and who says he has nothing to do with the new murders. Now forensics must stop a suspect they believe to be an impersonator so he doesn't strike again... at the same time, the killer from the past continues to evade capture, and he's not too keen on his rival.