A former Queens prosecutor who was fired in 2007 returned to her old stomping grounds as a defense attorney and beat her ex-colleagues in a murder trial.

Tamara Harris left the courthouse triumphant after successfully defending Michael McLennon, 41, who had been accused of killing a former tenant four years ago.

McLennon, 41, was found not guilty of murder, manslaughter and assault charges which would have landed him in jail for life. He was found guilty of criminal possession of a weapon.