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) / Director / Story 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) / Director / Story Claudio ArgentoProducteur Salvatore ArgentoExecutive Producer Giuseppe BassanProduction Design Antonella CaputoAssistant Production Design Maurizio GarroneSet Decoration Tommaso BarbiSet Decoration Massimo GarroneAssistant Set Decoration Luciano TovoliDirector Of Photography Diego Della ValleShoe Design Patrizia CorridoniKey Hair Stylist Franco TomeiCostume Designer Pierangelo CicolettiCostume Designer Pierantonio MecacciMakeup Artist Barbara CanevariAssistant Costume Designer Michele SoaviMaria's Boyfriend / Man with Girl on Beach (uncredited) / Second Assistant Director Lamberto BavaElevator Repairman #1 (uncredited) / First Assistant Director Francesca RobertiScript Supervisor Piero BozzaAssistant Editor Roberto PrioriAssistant Editor Massimo AnzellottiSound Effects Giancarlo LaurenziBoom Operator Claudio SimonettiOriginal Music Composer Romano PampaloniSound Mixer Luciano AnzellottiSound Effects Fabio PignatelliOriginal Music Composer Massimo MoranteOriginal Music Composer Carlo Du BoisProduction Accountant Cesare JacolucciProduction Manager Saverio MangognaProduction Secretary Giuseppe MangognaProduction Manager Ferdinando CaputoProduction Accountant Angelo IaconoGeneral Manager 
