Rosamund John as Anne Maitland, K.C.

Hugh Sinclair as Nigel Stewart

Guy Middleton as Guy Ransome

Henry Edwards as Geoffrey Whitcomb

Terence Longdon as Alan Whitcomb

John Warwick as Inspector Raynor

Brenda De Banzie as Molly Wheeler

Arthur Howard as Charles Vaughan

H.S. Hills as Frank Lindsell

Bruce Belfrage as The Judge

Hélène Burls as Mrs. Brock (as Helene Burls)

Fanny Rowe as Liz (as Frances Rowe)

Bill Shine as Willie

June Mitchell as Secretary

Barbara Shaw as Press Woman

David Scase as Cameraman

Norman Somers as Nigel's Junior

Harry H. Corbett as Policeman in charge cells (uncredited)

Peter Jeffrey as Court reporter (uncredited)