TV personality Robert Danvers, an exceedingly vain rotter, seduces young women daily, never staying long with one. He meets his match in Marion, an American, 19, who's available but refuses any romantic illusions.

Peter Sellers
as Robert Danvers

Goldie Hawn
as Marion

Tony Britton
as Andrew Hunter

Nicky Henson
as Jimmy

Diana Dors
as John's Wife

Judy Campbell
as Lady Heather

Gabrielle Drake
as Julia Halforde-Smythe

Nicola Pagett
as Claire the Bride

Geraldine Sherman
as Caroline

Thorley Walters
as Manager of Carlton Hotel