[7] Inspector Jaime Peña investigates an accident that has left night watchman Ángel Torres in a coma.

Mayka, a middle-aged, wealthy businesswoman, was married to a younger man and suffered a heart attack following a business trip.

Peña notes his wife, Ruth, died 10 years ago in a car accident, and he finds he still speaks of her in the present tense.

He finds the bottle on Álex, who admits it is a toxin manufactured by Mayka's pharmaceutical company, but he claims he found it on the floor and doesn't know what it does.

He said that he thinks Mayka only pretended to drink the wine laced with TH–16, which causes a heart attack after eight hours and leaves no trace in the blood, but that she instead took a tranquilizer that made her appear dead.

Ángel wakes up from his coma and reveals that after hearing a noise, he saw Mayka's body in the elevator before a figure in a balaclava fired a gun at him, sending him running into the street.

He then tells Álex that only recently Eva had remembered the logo on a keychain hanging from the other car's rearview mirror: Avalon, California.

Álex, now gasping to breathe, learns that eight hours earlier, Eva had dosed him with TH–16, and his death will be explained as a heart attack brought on by stress.

Roger Moore of Movie Nation gave it 3 out of 4 and called it "A lean, moody and superior horror thriller from Spain.