Dr. Matt Spevak is an at-home elder care service CEO and the twin brother of his subordinate Emma Spevak, whose career was downgraded at the behest of their favoritist mother to assist Matt in his. Matt was the original suspect of the strangulations of several elderly women receiving his services, only becoming more of a suspect when he was revealed to have gambling debts and his mountain climbing rope was revealed to be the murder weapon. Discrepancies in the company's finances revealed that Matt was embezzling from the victims' accounts and had them sign their inheritances over to him.
Emma, barely conscious from being choked herself, alleged that Matt was on the run, and he was tracked down to another client's house, where both were found dead, the client from a stroke and Matt from being shot with a gun that was in her hand. However, it was revealed that the client died of an air embolism and Emma killed them both, being the serial killer all along. She confessed in a sting and was arrested after being found out to have killed their mother by the same means. (SVU: "Bound")