Warren William

Perry Mason

Mary Astor

Bessie Foley

Allen Jenkins

Sgt. Holcomb

Grant Mitchell

District Attorney Claude Drumm

Helen Trenholme

Della Street

Helen Lowell

Elizabeth Walker

Dorothy Tree

Lucy Benton

Gordon Westcott

Arthur Cartwright

Harry Tyler

Sam Martin - Taxi Driver

Arthur Aylesworth

Sheriff Bill Pemberton

Russell Hicks

Clinton Foley

Frank Reicher

Dr. Carl Cooper

Addison Richards

Judge Markham

James P. Burtis

George Dobbs

Eddie Shubert

Ed Wheeler

Harry Seymour

David Clark

Stanley Blystone

Juror (uncredited)

Don Brodie

Reporter in Courtroom (uncredited)

Joseph Crehan

Captain Kelly (uncredited)

Bill Elliott

Reporter in Courtroom (uncredited)

Frank Fanning

Detective Driving Police Car (uncredited)

Jonathan Hale

Courtroom Spectator (uncredited)

Eddie Hart

Deputy (uncredited)

Milton Kibbee

Detective (uncredited)

Lightning the German Shepherd

Prince (uncredited)

Henry Otho

Bailiff (uncredited)

Joe Sawyer

Carl Trask (uncredited)

Charles Sherlock

Reporter with Camera in Courtroom (uncredited)

Monte Vandergrift

Detective (uncredited)

Jack Wise

Telegram Clerk (uncredited)

The Case of the Howling Dog

The Case of the Curious Bride

The Case of the Lucky Legs

The Case of the Velvet Claws

The Case of the Black Cat

The Case of the Stuttering Bishop