A mysterious murderer has already killed seven people using the deadly venom of a snake from Martinique which causes immediate death with the victim's face turning into a horrible mask. A young and ingenious police lieutenant is called on the case A mysterious murderer has already killed seven people using the deadly venom of a snake from Martinique which causes immediate death with the victim's face turning into a horrible mask. A young and ingenious police lieutenant is called on the case A mysterious murderer has already killed seven people using the deadly venom of a snake from Martinique which causes immediate death with the victim's face turning into a horrible mask. A young and ingenious police lieutenant is called on the case A mysterious murderer has already killed seven people using the deadly venom of a snake from Martinique which causes immediate death with the victim's face turning into a horrible mask. A young and ingenious police lieutenant is called on the case