Nine Guests for a Crime (1977) Plot Summary Explained

Carla is Charlie's daughter and Michele's wife. She is avenging her father's murder, which happened twenty years earlier on the island. After learning the truth about Charlie's death, she orchestrated the entire gathering and murders as retribution for the crime committed against her father.

Foreshadowing: Earlier in the film, the group wonders why the killer would target them one by one, not knowing the vendetta stems from a death they each had a hand in.

• carla killer
• charlie daughter
• revenge murder
• avenger

Carla faked her death upon arriving at the island. Her body was never recovered after the initial chaos, which allowed her to move freely among the guests as the mysterious killer. Lorenzo admits he knew her body wasn't found, which explains how she could secretly carry out the killings.

Foreshadowing: The timeline shows only eight guests are accounted for after the initial arrival, hinting that someone survived unaccounted for.

• carla fake death
• carla survives
• body never recovered

Elisabetta is Ubaldo's sister and was Charlie's former lover. She helped fake Charlie's death twenty years ago and was complicit in Carla's revenge plan. Her knowledge and involvement kept the killer's identity hidden until the final revelation.

Foreshadowing: Elisabetta's unusual calm throughout the killings and her cryptic interactions with other guests hint at her deeper knowledge of the situation.

• elisabetta charlie
• former lover
• complicity fake death

Elisabetta confronts Lorenzo during the dawn chase, attempting to manipulate him and stop his pursuit of Carla. When she stands in his way and tries to influence his decisions, Lorenzo shoots her. She then retaliates by pouring gasoline into the boat, sealing both their fates.

Foreshadowing: Elisabetta's attempts to control events throughout the film suggest she would not let Lorenzo undermine her plan.

• lorenzo shoots elisabetta
• final confrontation dawn

Lorenzo is trapped on the boat after Elisabetta pours gasoline into it. When he attempts to start the engine, the boat detonates into flames and he is burned to death. This occurs as Carla watches from the rocks before she also dies from her wounds.

Foreshadowing: The spark plugs Carla retrieves earlier become the ignition source for the explosive confrontation.

• lorenzo death
• boat explosion
• burned alive

Carla kills the sailors who ferried the group to the island and sabotages their boat to cut off any escape route. This ensures the family remains trapped on the island with no way to call for help or flee, creating the isolated setting necessary for her methodical revenge.

Foreshadowing: The immediate attack after landing signals this is part of a premeditated plan, not a random act.

• boat sabotaged
• sailors killed
• island trapped

Twenty years before the events, Charlie was murdered on the seashore by four men who shot him and buried him alive in the sand. This crime was the catalyst for the entire revenge plot, as his daughter Carla grew up to avenge his death.

Foreshadowing: Ubaldo's decision to bring the family to the exact location where Charlie died plants the seeds for the final confrontation.

• charlie murder twenty years
• buried alive beach

Carla retrieves the spark plugs from their hiding place and attempts to escape by boat. During the struggle with Lorenzo, she takes the spark plugs, but Lorenzo reclaims them after shooting her. The spark plugs become the key to the failed escape and the subsequent explosion.

Foreshadowing: The earlier reference to the boat's location foreshadows this desperate attempt at maritime escape.

• spark plugs struggle
• carla escape attempt

Carla is Charlie's daughter and Michele's wife. This makes her part of the family she is targeting for revenge. She kept her identity hidden from the other guests throughout the killings, only revealing herself when the truth emerges at the end.

Foreshadowing: Michele's presence among the victims and his unexplained nervousness hint at a deeper connection he knows but won't reveal.

• carla daughter charlie
• michele wife

Before dying from her wound, Elisabetta pours gasoline into the boat as a final act of sabotage. Knowing she cannot escape, she ensures Lorenzo cannot use the boat to flee either, turning the escape vehicle into a trap that leads to his fiery death.

Foreshadowing: Her willingness to sacrifice herself suggests she preferred death over allowing the plan to fail.

• elisabetta gasoline
• boat trap
• final act sacrifice