The Witness Vanishes

Edmund Lowe

Mark Peters

Wendy Barrie

Joan Marplay

Bruce Lester

Lord Noel Stratton

Forrester Harvey

Allistair McNab

Walter Kingsford

Amos Craven

J.M. Kerrigan

Flinters

Barlowe Borland

Lucus Marplay

Boyd Irwin

Sinclair Ellis

Vernon Steele

Nigel Partridge

Reginald Barlow

Sir John Digby

Leyland Hodgson

Dade

Robert Noble

Inspector Wren

Phyllis Barry

Miss Carson (uncredited)

Wilson Benge

Bradley the Butler (uncredited)

Hal E. Chester

Copy Boy (uncredited)

Herbert Evans

Kirby the Assistant Editor (uncredited)

Denis Greene

Leets (uncredited)

Anne Nagel

Laura the Secretary (uncredited)

Alexander Pollard

Eddie the Sanitorium Attendant (uncredited)

John Rogers

Printer (uncredited)