Susie Frain was the fiancée of serial killer and rapist Dr. Greg Yates, who she continuously claimed was innocent. She was allowed to have a conjugal visit with Yates after ADA Rafael Barba agreed in order to get Yates to tell more about murder victims which were similar to those he committed. She was later murdered by M.E. Carl Rudnick, a friend of Dr. Yates' and a fellow serial killer. (SVU: "Criminal Pathology")