On the eve of his execution, killer Edward G. Robinson busts out of prison with the help of his girlfriend (Jean Parker) and a crook posing as a reporter (Warren Stevens). Robinson takes along five hostages, including the daughter of the murdered head guard (Sylvia Findley), a real reporter (Jack Kelly), and a priest (Milburn Stone). Escaping with Robinson is a murderous bank robber (Peter Graves), who is wounded while evading the law. The bleeding robber heads for the safety deposit box where he keeps his ill-gotten gains, allowing the Law to follow the trail of blood toRobinson's hideout. Robinson threatens to kill his hostages if he's not given safe passage, then murders the priest just to prove his point. Appalled at this action, the bank robber kills Robinson, allows the surviving hostages to escape, and gives himself up.