Anthony FranciosaPeter Neal Giuliano GemmaDetective Germani Veronica LarioJane McKerrow Carola StagnaroDetective Altieri John SteinerChristiano Berti Lara WendelMaria Alboretto Isabella AmadeoBullmer's secretary Ennio GirolamiDepartment Store Manager Giampaolo SaccarolaCoroner Ippolita SantarelliProstitute Dario ArgentoNarrator / Murderer's Hands (voice) (uncredited) / Regista / Sceneggiatura Lamberto BavaElevator Repairman #1 (uncredited) / First Assistant Director Michele SoaviMaria's Boyfriend / Man with Girl on Beach (uncredited) / Second Assistant Director Dario ArgentoNarrator / Murderer's Hands (voice) (uncredited) / Regista / Sceneggiatura Claudio ArgentoProduttore Salvatore ArgentoProduttore Esecutivo Giuseppe BassanProduction Design Antonella CaputoAssistant Production Design Massimo GarroneAssistant Set Decoration Maurizio GarroneSet Decoration Tommaso BarbiSet Decoration Luciano TovoliDirector Of Photography Barbara CanevariAssistant Costume Designer Diego Della ValleShoe Design Pierantonio MecacciMakeup Artist Pierangelo CicolettiCostume Designer Patrizia CorridoniKey Hair Stylist Franco TomeiCostume Designer Francesca RobertiSupervisore della Sceneggiatura Michele SoaviMaria's Boyfriend / Man with Girl on Beach (uncredited) / Second Assistant Director Lamberto BavaElevator Repairman #1 (uncredited) / First Assistant Director Roberto PrioriAssistant Editor Piero BozzaAssistant Editor Franco FraticelliMontatore Luciano AnzellottiSound Effects Giancarlo LaurenziBoom Operator Massimo AnzellottiSound Effects Romano PampaloniSound Mixer Fabio PignatelliCompositore Musicale Originale Claudio SimonettiCompositore Musicale Originale Massimo MoranteCompositore Musicale Originale Saverio MangognaProduction Secretary Carlo Du BoisProduction Accountant Ferdinando CaputoProduction Accountant Cesare JacolucciProduction Supervisor Giuseppe MangognaResponsabile di Produzione Angelo IaconoGeneral Manager 
