Robert Montgomery

Lord Peter Wimsey

Constance Cummings

Harriet Vane

Leslie Banks

Inspector Kirk

Seymour Hicks

Mervyn Bunter (as Sir Seymour Hicks)

Robert Newton

Frank Crutchley

Googie Withers

Polly

Frank Pettingell

Puffett

Joan Kemp-Welch

Aggie Twitterton

Aubrey Mallalieu

Rev. Simon Goodacre

James Carney

Constable Sellon

Roy Emerton

Noakes

Louise Hampton

Mrs. Ruddle

Eliot Makeham

Simpson

Reginald Purdell

MacBride

Gwen Ffrangcon Davies

Woman (uncredited)

Arthur B. Woods