Kathleen Mangan, the estranged wife New York City police officer Gilberto Valle, dubbed by local media as the "Cannibal Cop" is driven from the Manhattan Federal Court in New York February 25, 2013. Mangan testified as a key witness against Valle and New Jersey mechanic Michael Van Hise for plotting to kidnap, cook and eat a Manhattan woman. Valle faces 20 years to life in prison if convicted on a conspiracy to kidnap charge. REUTERS/Brendan McDermid (UNITED STATES - Tags: CRIME LAW)