Ian Keith
(Dr. Julian Murray)
Tala Birell
(Dr. Sterne)
Ferdinand Gottschalk
(Dr. Fontaine)
Suzanne Kaaren
(Gloria Blank)
Lionel Pape
(Dr. Travis)
Rollo Lloyd
(The Colonel)
Teru Shimada
(Dr. Nogi)
Nigel De Brulier
(Father Gonzales)
Nina Campana
(Maria)
Warner Richmond
(Burke)
Ferdinand Munier
(Sen. Blank)
Harry Allen
(McKenzie)
Don Barclay
(Miggs)
Harry 'Snub' Pollard
(Baker)
Robert Warwick
(Capt. Parker)