Riptide

rc: Jack Ging (Lt. Quinlan) When an oil tycoon, an old friend of Murray's, is killed, the man's daughter is certain that it was murder, and asks the detectives to investigate. Their immediate suspect is the man's partner in the oil business, after the two had been arguing shortly before the death, but as they dig deeper, they pose as high rollers as investigations take them on-board a casino ship, and the killers are from a very unexpected quarter...