An ex-chorus girl lives on the Riviera, supported by a married man she doesn’t know is a crook.

A strait-laced British banker hires an eccentric private detective to follow his free-spirited American wife, whom he suspects is cheating on him.

Overwhelmed with her suffocating program, vacationing European princess Ann takes away for a night time at Rome. After a sedative she obtained from her physician kicks in, however, she falls…