Cast
Griff Barnett
Dr. Philip Conway
Marion Marshall
Ruth
Henri Letondal
Prof. Roland Pavin
William Holden
Jason Taylor
Betty Lynn
Wife
Charles Lane
Prof. Collins (uncredited)
Ray Walker
Carson (uncredited)
Houseley Stevenson
Prof. T.J. Beck
Randy Stuart
Dorothy
Almira Sessions
Mrs. Landon
Gene Lockhart
Prof. Edward Bell
Gene Nelson
Jerry (uncredited)
Jeanne Crain
Peggy Taylor
Edmund Gwenn
Prof. Henry C. Barnes