Primeval: New World (2012)

S3E18 The Stryker Brothers

On March 3, 1932, a daring train heist unfolds on the southbound express to Chicago. The Stryker brothers make off with mail bags holding $750,000 in payroll cash. Tragically, during the chaos, a baggage handler and Lippy Carson, a mail clerk and accomplice to the Strykers, lose their lives and are discarded from the moving train. Given that robbing mail is a federal crime, Eliot Ness and his Untouchables are summoned to investigate the incident.