David Sawyer

An insider holds the secret to the tobacco industry's latest deadly development.

The squad fears terrorism after a judge and a lawyer receive letters filled with white powder; Internal affairs puts the squeeze on Clark to rat out Andy after the death of a hooker informant.; Jones gets back into the dating pool with another co-worker.

Twelve years ago, Jack worked a serial killer case in which five women were murdered, and he was unable to prevent the carnage. Now, Jack and the team search for a missing woman whose description is remarkably similar to the five murder victims from long ago. The man guilty of the original crimes, Randy Thorton (Keith Brunsman), remains in jail, but the team learns that Graham Spaulding (Conor O'Farrell), a pedophile Jack arrested in a previous case, visited Thorton. Jack soon realizes that Spaulding is imitating the original case in an effort to exact revenge on Jack and that Spaulding has uncovered information about Jack's own family. Tim Matheson ("The West Wing") directed the episode.

While Docknovich and Mosley clash over jury selection for the Latrell case, an agent eager to represent Latrell implies that his current agent has been stealing from clients.