He used the perfect murder weapon, a drug that breaks down into compounds common in the human body, but that can be fatal when skillfully administered. But a lie sowed the seeds of suspicion that eventually brought him to justice. After a whirlwind courtship and a Las Vegas wedding, the marriage of David Davis and Shannon Mohr came to a tragic end when she died, apparently by accident. But Davis" comment that Shannon had no life insurance policy contradicted something she had said earlier, and her suspicious mother convinced the sheriff"s department to exhume the body and perform an autopsy. AMERICAN JUSTICE® recounts how Davis was living in Florida when he got word of his indictment for murder, then follows the fugitive as he leads the authorities on a nine-year manhunt. Ultimately, a tip called in after an episode of Unsolved Mysteries led authorities to Pago Pago, where Davis was working as a bush pilot.