Nova Pilbeam
Erica Burgoyne

Derrick De Marney
Robert Tisdall

Percy Marmont
Col. Burgoyne

Edward Rigby
Old Will

Mary Clare
Erica's Aunt Margaret

John Longden
Det. Insp. Kent

George Curzon
Guy

Basil Radford
Erica's Uncle Basil

George Merritt
Det. Sgt. Miller

J.H. Roberts
Solicitor Henry Briggs

Jerry Verno
Lorry Driver

Alfred Hitchcock
Photographer Outside Courthouse (uncredited)

Anna Konstam
Elsie a Bather at Beach (uncredited)

Bill Shine
Manager of Tom's Hat Cafe (uncredited)

Peggy Simpson
Alice a Bather at Beach (uncredited)

Torin Thatcher
Nobby's Lodging House Caretaker (uncredited)