All Cast

Robert Livingston

Robert Livingston

Dr. Lawrence Baxter

Grace Bradley

Grace Bradley

Jean Sterling

Willard Robertson

Willard Robertson

Inspector 'Mac' McDonald

Pierre Watkin

Pierre Watkin

Kennedy

Smiley Burnette

Smiley Burnette

Jimmy

Granville Bates

Granville Bates

Prof. Rexford Sterling

William Newell

William Newell

Andrews

Byron Foulger

Byron Foulger

Pete Andorka

Wilbur Mack

Wilbur Mack

F. J. Thompson

Matty Fain

Matty Fain

Burke

Josephine Whittell

Josephine Whittell

Nurse Nelson

Charles Timblin

Charles Timblin

Swain

Billy Griffith

Billy Griffith

Kellogg

William Hopper

William Hopper

Announcer

Frank Du Frane

Frank Du Frane

Golden

Mary Russell

Mary Russell

Nurse (uncredited)