The New Jersey Suitcase Killer Melanie McGuire

Three suitcases were found floating near the islands of the Chesapeake Bay Bridge-Tunnels between May 5, 2004, and May 16, 2004.  After investigators released a composite sketch of the victim, he was identified as Bill McGuire, a Navy veteran and computer programmer who had two young sons with his wife, Melanie, who would quickly become the prime suspect. Every piece of evidence found during the investigation seemed to implicate Melanie in the murder and dismemberment of her husband but investigators couldn't find much of a motive and didn't have anything that went beyond circumstantial. Melanie had an answer for investigators every time they brought new evidence to light but would her answers be enough to keep her from being found guilty?