Jack Kelley's former partner, Billie Aggie, returns to star as the Postal Inspectors' "Expert" Investigator in the Plymouth Mail Robbery. Billie introduces Maurice "Pro" Lerner into Jack's circle, but Jack is one step ahead of them.

Episode 1 - Jack Kelley

Episode 4 - Roy Appleton

Episode 5 - Carmello Merlino & Sonny Diaferio