Peter Miles' stepson was worried. He had not heard from his stepfather in a few days so Friday morning he stopped by Miles' rowhouse on the 5300 block of Poplar Street.
On the second floor, he found Miles, 59, dead from three stab wounds to the right side of his chest.
Miles was pronounced dead at the scene by paramedics.
Police remained on the scene Friday afternoon, removing bags of evidence from the home and interviewing neighbors.
Investigators have not released any motive or suspects.
Anyone with information should call Homicide at 215-686-3334.