First outing in this series introduces Canadian cop new to London. With his taciturn English counterpart he grapples with a protection war between rival gangs.
Frank and Jane, while honeymoon in London, have their pockets picked by Mickey who find an insurance policy for diamonds. Mickey turns the info over to a mobster friends who plans to steal the jewels if McGuire doesn't stop him.
Bill Killian is caught in the act of opening a safe. His brother springs him from court and attempts to smuggle him out of the country with the police in pursuit.