Cast
Jim Bannon
Jack Packard
Ludwig Donath
Dr. Karger
Edward Earle
E. R. Willard
John Elliott
John, butler
Frank Mayo
Quentin Mitchell
Barton Yarborough
Doc Long
Paul E. Burns
Leon Hartman
Thomas E. Jackson
Det. Capt. Quinn
Anita Louise
Janet Mitchell
Michael Duane
Rex Kennedy
Mona Barrie
Louise Mitchell
Frank Wilcox
Prof. Arthur Logan
Richard Hale
Curator Raymond Halliday
Mary Newton
Nurse
Coulter Irwin
Frank, Willard's aide
Harry Strang
Brophy, museum watchman