Henry Levin
Director
Carlton E. Morse
Radio Play
Charles O'Neal
Screenplay
Dwight V. Babcock
Additional Dialogue
Henry Freulich
Director of Photography
Robert Peterson
Art Direction
George Montgomery
Set Decoration
Carl Hiecke
Assistant Director
Jerome Thoms
Editor
Mischa Bakaleinikoff
Music Director
Jim Bannon
Jack Packard
Anita Louise
Janet Mitchell
Michael Duane
Rex Kennedy
Barton Yarborough
Doc Long
Paul E. Burns
Leon Hartman
Thomas E. Jackson
Det. Capt. Quinn
Mona Barrie
Louise Mitchell
Frank Wilcox
Prof. Arthur Logan
Richard Hale
Curator Raymond Halliday
Ludwig Donath
Dr. Karger
Mary Newton
Nurse
Edward Earle
E. R. Willard
Fred Godoy
Senor Mendoza
John Elliott
John, butler
Frank Mayo
Quentin Mitchell
Frank Martin
Introductory Narrator (voice)
Coulter Irwin
Frank, Willard's aide
Bud Averill
Closing-Time Museum Guard
Harry Strang
Brophy, museum watchman
