An Italian policeman investigates a series of murders involving people in prominent positions. Left behind at each murder scene is a drawing of a salamander. The policeman begins to suspect these murders are linked to a plot to seize control of the government.
| Directing | Peter Zinner | Director |
| Production | William R. Forman | Executive Producer |
| Editing | Claudio M. Cutry | Editor |
| Writing | Rod Serling | Adaptation |
| Production | Erwin C. Dietrich | Producer |
| Editing | Katina Zinner | Editor |
| Writing | Robert Katz | Writer |
| Production | Paul Maslansky | Producer |
| Writing | Morris L. West | Novel |
| Camera | Marcello Gatti | Director of Photography |
| Production | Renzo Rossellini | Co-Producer |
| Sound | Jerry Goldsmith | Original Music Composer |
| Writing | Robert Katz | Screenplay |
| Art | Giantito Burchiellaro | Art Direction |
| Art | Wayne Fitzgerald | Title Designer |
| Production | Joe Pollini | Production Manager |
| Crew | Angelo Ragusa | Stunts |
| Directing | Tony Brandt | Assistant Director |
| Sound | Tonino Testa | Sound |
| Costume & Make-Up | Fabrizio Caracciolo | Costume Design |
| Lighting | Stefano Marino | Electrician |
| Art | Fernando Valento | Construction Manager |
| Editing | Patrizia Ceresani | Assistant Editor |
