One of the four trespassing friends. He is hunted down and murdered by the billhook-wielding assailant shortly after Louise's death.
Roberto is killed because he belongs to the trespassing group.
Simone is revealed to have murdered Roberto with a billhook.
They share membership in the same group of trespassing friends.
Louise and Roberto are both identified as members of the group of four friends trespassing on the property.
They belong to the same social group before the killings.
Roberto and Sylvie are both named as members of the four friends who enter the property.
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