Murderers' Row

Professional assassin and counter-agent Matt Helm has been given a distasteful assignment. He is to disguise himself as gangster Jimmy "the Lash" Petroni and assault a fellow agent in order to help establish her cover in a top-secret operation. But now Jean is dead, and Helm must take her place on a dangerous mission. Alone in Chesapeake Bay, pursued by his own government, Helm must carry out an assassination-before his employers catch up to him.