for her. Although she is initially frightened, Bosco charms her family and they invite him to stay for dinner. Once alone, Bosco attempts to seduce Ángela but she resists his advances. At the school, Chema asks a security guard to see the security tape of the video library on the night of Figueroa's death. That night, Ángela has a dream that Bosco threatens her with a knife, performs oral sex on her while videotaping it, and then stabs her. Castro questions Ángela about Figueroa's death, showing her a security footage of her discovering the body and taking the videotape. As Ángela is about to admit why she took the tape, Chema calls and tells her to leave Castro's office immediately, saying that he is involved in the snuff film. Castro fails to catch Ángela as she flees his office. Bosco's girlfriend, Yolanda, confronts Ángela and explains that she, Vanessa, Bosco, and Chema, who was once a friend of Bosco, had gone to a series of director's workshops with Castro two years previously. Yolanda states that she left when they made Vanessa take off her clothes for a short film, that Chema was obsessed with snuff films, and that she believes he killed Vanessa after the workshop ended. Later, Chema admits to Ángela that he knew Bosco, but claims he also left the workshop when things got out of hand. At night, Chema shows Ángela a hidden tunnel he has discovered in the school's video library. In a room off the tunnel, they find shelves of video tapes like the one of Vanessa, indicating that many other women may have been murdered in other snuff films. Suddenly the door to the tunnel closes and they are locked inside. Fearing they will be killed, Chema and Ángela walk further into the tunnel with only matches to light their way. They find an editing room where they fall asleep in each other's arms. When Ángela wakes, the lights have come back on and Chema is gone. She walks through a doorway and is chloroformed. She awakens tied to a chair facing Castro, who is videotaping her. Castro tells that he only edited the snuff videos, but that he has to kill her and that her death will be painless and much quicker than Vanessa's. As he aims a gun at Ángela's head, Chema appears and wrestles with him. The gun goes off, killing