Daisy and Viola are siamese twin sisters on the verge of turning 18 living in the suburbs of Naples. They are blessed with beautiful voices and thanks to their performances at weddings, communions and baptisms, they get the livelihood for the whole family.
When a lonely man finds out the love of his life has a conjoined twin, who happens to be a serial killer, he must take drastic measures to keep his love life intact while keeping himself out of big trouble.
Conjoined twins Daisy and Violet Hilton were once the cream of the sideshow crop. Taught to sing and dance at an early age, the winsome duo ascended through the early 20th-century vaudeville circuit as a side attraction (working alongside Bob Hope and Charlie Chaplin as well as a memorable turn in the Tod Browning classic "Freaks") before a cascade of unscrupulous management and harsh mistreatment brought their careers (and lives) tumbling down.
One day a commuter, who happens to be a burglar, finds a dead body on a train. As he was just returning from a burglary and not wanting to draw attention to himself, he decides to get rid of the corpse himself.
An American military officer (Joel McCrea) and his wife (Evelyn Keyes) move to a cottage in what they think is the peaceful English countryside, only to discover the area is a hotbed of spies and secret agents.