Nancy Kissel, dubbed the "milkshake" murderess, sits in a prison van as she arrives at the Court of Final Appeal in Hong Kong February 11, 2010. Hong Kong's highest court on Thursday quashed the conviction of Kissel, jailed for life for murdering her banker husband by feeding him a spiked milkshake and clubbing him to death, and ordered a retrial. REUTERS/Bobby Yip (CHINA - Tags: CRIME LAW)