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Reparto (19)

Dorothy McGuireHelenGeorge BrentProfessor WarrenEthel BarrymoreMrs. WarrenKent SmithDr. ParryRhonda FlemingBlancheGordon OliverSteve WarrenElsa LanchesterMrs. OatesSara AllgoodNurse BarkerRhys WilliamsMr. OatesJames BellConstableErville AldersonDr. Harvey (uncredited)Ellen CorbyNeighbour (uncredited)Myrna DellMurder Victim (uncredited)Robert SiodmakThe Killer's 'Eye' (uncredited)George HolmesThe Killer's 'Shadow' (uncredited)Stanley PriceStarry-eyed Man (uncredited)Richard TylerFreddy (uncredited)Charles WagenheimDesk Clerk (uncredited)Larry WheatMinister (uncredited)

Arte

• Albert S. D'Agostinoart direction
• Jack Okeyart direction
• Darrell Silveraset decoration

Cámara

• Nicholas MusuracaDirección de fotografía

costume & make-up

• Edward Stevensoncostume design

Equipo

• Vernon L. Walkerspecial effects
• Gordon Carvethstunts

Dirección

• Robert SiodmakDirección
• Harry Scottassistant director

Montaje

• Harry GerstadMontaje
• Harry MarkerMontaje

Producción

• Fred Fleckproduction manager
• Dore ScharyProductor
• Edgar Petersonproduction assistant

Sonido

• Roy Webboriginal music composer
• John L. Casssound designer
• Samuel Hoffmanmusician
• Terry Kellumsound designer
• John L. CassSonido
• Terry KellumSonido
• C. Bakaleinikoffmusic director
• Samuel Hoffmanmusician

Efectos visuales

• Chris Crowelldigital compositor

Guion

• Ethel Lina Whitenovel
• Mel DinelliGuion