Dr. Lawrence Baxter

Robert Livingston

Acting

Jean Sterling

Grace Bradley

Acting

Inspector 'Mac' McDonald

Willard Robertson

Acting

Kennedy

Pierre Watkin

Acting

Jimmy

Smiley Burnette

Acting

Prof. Rexford Sterling

Granville Bates

Acting

Andrews

William Newell

Acting

Pete Andorka

Byron Foulger

Acting

F. J. Thompson

Wilbur Mack

Acting

Burke

Matty Fain

Acting

Nurse Nelson

Josephine Whittell

Acting

Swain

Charles Timblin

Acting

Kellogg

Billy Griffith

Acting

Announcer

William Hopper

Acting

Golden

Frank Du Frane

Acting

Nurse (uncredited)

Mary Russell

Acting

Spinster

Florence Gill

Acting

Henchman (uncredited)

Frank Austin

Acting

Henchman (uncredited)

Richard Beach

Acting

Hospital Administrator (uncredited)

Harrison Greene

Acting

Druggist (uncredited)

John Holland

Acting

Henchman (uncredited)

Monte Montague

Acting

Nightclub Waiter (uncredited)

William H. O'Brien

Acting

Radio Announcer (uncredited)

Carleton Young

Acting