Charming young man who uses a specific Sony zoom camera. Pursues Ángela and provides false alibis regarding a missing student. Revealed to be the mastermind behind the snuff films, torturing and killing victims. Attempts to murder Ángela but is fatally shot by her in his garage.
Bosco becomes the murderer Ángela must ultimately defeat.
Ángela discovers Bosco's garage matches the snuff film location, and she shoots him after escaping his attempt to torture and kill her.
Their former friendship becomes a source of suspicion and conflict.
Yolanda says that Chema was once a friend of Bosco, and Chema later admits that he knew Bosco.
Yolanda's relationship with Bosco gives her access to his past.
Yolanda is explicitly identified as Bosco's girlfriend.
Bosco is revealed as the perpetrator of Vanessa's murder.
The snuff film shows Vanessa being tortured and killed, and Ángela recognizes the film's garage as Bosco's garage before shooting Bosco.
Bosco's presence places Sena in emotional and physical danger.
Sena attends a party with Bosco and insists that Bosco is in love with her when Ángela tries to take her away.
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