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Roberto is understandably distressed. While he was taking a relaxing sauna, he witnessed a murder. As an upstanding (if cynical) lawyer and officer of the court, he reports the crime to the police, but when they all return to the sauna there's no corpse and the police don't believe him. The murdered man's body is found elsewhere, and the police call it a suicide. The murderers, however, are not as easily fooled as the police, and Roberto's life is seriously in danger.