A Bay of Blood

One night at her bayside mansion, Countess Federica Donati is attacked and strangled to death by her husband, Filippo, who stages the murder as a suicide. Shortly afterwards, Filippo is stabbed to death by an assailant, who removes his corpse from the scene. Architect Franco Ventura travels to the property in order to have Filippo sign over ownership of the bay, unaware that Filippo has been killed. Four gallivanting friends—Luca, Roberto, Sylvie, and Louise—trespass on the property and break into the seemingly deserted mansion.