S1, E5: Detective Mocello responds to the scene of a suspicious fire in the bedroom of a first floor apartment. He doesn't know if it's a homicide, an accident, or a suicide when he arrives. But he soon discovers that the deceased victim's charred body has sustained serious trauma. While arson investigators pick through the soot, Mocello and the team find a gas can, a set of keys in the parking lot and a shoeprint on a nearby railing. Mocello theorizes it could have been a burglary gone wrong. But then Mocello meets with the victim's landlord and learns of a troubled relationship the victim had with a relative. With the evidence they've collected, they'll have to determine whether they should be hunting for a stranger, or a relative.