To gain fame quickly - three actors - Mino, Giacinto and Mirella, stage a fake murder (Mirella is the "victim"), then plan to find the "body" at the most opportune moment. Unfortunately, a real murder takes place in Mirella's apartment when a young woman named Margaret is killed. Having left abundant clues to the fake murder, Mino and Giacinto realise the only way to save themselves from jail is to find Margaret's killer. Despite the intrusions of a stupid police inspector, the two men discover she was killed by a mysterious "organization". Although every witness they try to question is killed by a hitman, they eventually unravel the mystery...
| Actor | Role |
|---|---|
 Enrico MontesanoMino Orlandi | Mino Orlandi |
 Alighiero NoscheseGiacinto Puddu | Giacinto Puddu |
 Francis BlancheCommissioner Pigna | Commissioner Pigna |
 Isabella BiaginiMirella Trombetti | Mirella Trombetti |
 Lino BanfiVice Commissioner Magli | Vice Commissioner Magli |
 María BaxaMargaretha | Margaretha |
| LLuca SportelliDirector | Director |
 Francesco MulèQuaestor | Quaestor |
 Daniele VargasJosé | José |
 Umberto RahoJean-Pierre, murderer | Jean-Pierre, murderer |
 Valentino Macchispeaker TV | speaker TV |
 Nello PazzafiniIvan | Ivan |
 Mimmo PoliBarman al party | Barman al party |
 Bruno BertocciNot listed | Not listed |
| LLino ColettaNot listed | Not listed |
 Marcella Di FalcoGangster | Gangster |
 Gildo Di MarcoGangster | Gangster |
 Isabelle MarchallMotorcyclist | Motorcyclist |
 Mario PedoneNot listed | Not listed |
 Gastone PescucciTaxi driver | Taxi driver |
 Ada PomettiRAI TV Employee | RAI TV Employee |
 Luciano RossiGangster | Gangster |
 Maria TedeschiParty guest | Party guest |
| RRenato DorascenziUsher (uncredited) | Usher (uncredited) |