Robert Mitchum as Dr. Mark Lucas

Ava Gardner as Barbara Beaurevel

Melvyn Douglas as Paul Beaurevel

Lucile Watson as Aunt Eula Beaurevel

Janis Carter as Corinne Lucas

Gordon Oliver as Clay Duchesne

Basil Ruysdael as Dean Cazzley

Clarence Muse as Pompey

Jack Briggs as Cousin Philippe

Will Wright as Luther Toplady

Walter Kingsford as Coroner

Steve Carruthers as Party Guest (uncredited)

Kenner G. Kemp as Spectator at Inquest (uncredited)

Kenneth MacDonald as Police Sergeant (uncredited)