盲俠智多星
原标题: The Cat o' Nine Tails
中年男子弗兰克•阿诺（Karl Malden 饰）曾是一名记者，双目失明后他闲赋家中，与侄女洛芮（Cinzia De Carolis 饰）居住在一起。某天傍晚，叔侄俩散布时听到两个陌生男子的神秘谈话。当晚，附近的特兹医学研究所便被人破门而入。前来调查的警察得知没有任何东西丢失，随后离去。然而次日报纸上便刊载了研究所工作人员卡拉布雷西（Carlo Alighiero 饰）跌落月台被撞身亡的消息。弗兰克知晓死者正是那天两个谈话男子中的一个，而这看似意外的死亡背后必有隐情。他找到曾报道闯入事件的记者卡罗（James Franciscus 饰），在两位记者通力合作下，一项神秘的医学实验浮出水面……
演员阵容
| 演员 | 角色 |
|---|---|
| James Franciscus | Carlo Giordani |
| Karl Malden | Franco Arnò |
| Catherine Spaak | Anna Terzi |
| Pier Paolo Capponi | Police Supt. Spini |
| Horst Frank | Dr. Braun |
| Rada Rassimov | Bianca Merusi |
| Aldo Reggiani | Dr. Casoni |
| Carlo Alighiero | Dr. Calabresi |
| Vittorio Congia | Righetto (cameraman) |
| Ugo Fangareggi | Gigi the Loser |
| Tom Felleghy | Dr. Esson |
| Emilio Marchesini | Dr. Mombelli |
| Fulvio Mingozzi | Spimi's man |
| Corrado Olmi | Morsella |
| Pino Patti | Barber |
| Umberto Raho | Manuel's ex-lover |
| Jacques Stany | Prof. Manera |
| Stefano Oppedisano | Taxi driver |
| Ada Pometti | Telephone operator |
| Walter Pinelli | |
| Sascha Helwin | |
| Marie Louise Sinclair | Film starlet |
| Martial Boschero | |
| Cinzia De Carolis | Lori |
| Werner Pochath | Manuel |
| Tino Carraro | Prof. Fulvio Terzi |
| Ettore Arena | Billiard Player (uncredited) |
| Aristide Caporale | Smoker in the Billiard Hall (uncredited) |
| Giovanni Di Benedetto | Chief of Police Salmi (uncredited) |
| Margherita Horowitz | Lori's Babysitter (uncredited) |
船员
| 角色 | 名称 |
|---|---|
| Screenplay | Bryan Edgar Wallace, Dario Argento |
| Story | Dardano Sacchetti, Dario Argento, Luigi Cozzi |
| Director | Dario Argento |
| Producer | Salvatore Argento |