Leonard Butler, 44, was killed during a violent home invasion on October 14, 2014, at his residence on Lakewood Street in Pittsburgh’s Elliott neighborhood. Two men, identified as Derek Lee and Paul Durham, forced their way in, held Butler and his girlfriend at gunpoint in the basement, demanded money, and assaulted Butler with a stun gun and by pistol-whipping him. During a struggle over a firearm, a single shot fatally wounded Butler; the two assailants then fled. A neighbor had recorded a license plate that investigators linked to a vehicle rented by Derek Lee.

Prosecutors said the attack was solicited by Butler’s ex-girlfriend, Jamie Parker, allegedly motivated by jealousy and revenge; charges against her for criminal homicide were later withdrawn and she faced a conspiracy to commit robbery charge. In September 2016, Derek Lee and Paul Durham were convicted of second-degree murder after Butler’s girlfriend identified them from a photo array. What else is known about the case or the people involved that might help fill remaining gaps?