“Lesser Evils” – Sherlock (Jonny Lee Miller) and Joan (Lucy Liu) try to determine who has been killing weak and terminal patients at a hospital, making it look like they died of natural causes, on ELEMENTARY, Thursday, Nov. 1(10:00-11:00 PM, ET/PT) on the CBS Television Network. PHOTO CREDIT: GIOVANNI RUFINO/CBS © 2012 CBS. All Rights Reserved.