Bob Hope as Bob Holcomb

Tuesday Weld as JoJo Holcomb

Frankie Avalon as Kenny Klinger

Dina Merrill as Karin Granstedt

Jeremy Slate as Erik Carlson

Rosemarie Frankland as Marti

Walter Sande as Bjork

John Qualen as Olaf

Peter Bourne as Ingemar

Fay DeWitt as Hilda

Alice Frost as Greta

Maudie Prickett as Spinster

Beverly Powers as Electra

Siv Marta Aberg as Inger

Paulene Myers as Eloise

Christopher Riordan as Student on Beach

Ronne Troup as Teen Party Guest

Frank Wilcox as Mr. Dow

Eleanor Audley as Mrs. Dow

Margaret Mason as Aggressive Blonde