The Black Hand (S04E09)

Murdoch arrives at the scene of a murder involving Joe Prestia, a charming man in his thirties, only to find out that he had previously been involved with the victim’s stunning fiancée, Anna Fulford. Dr. Ogden uncovers clues indicating that Joe may have been targeted by a professional killer. Anna, bewildered, is unaware of anyone who would wish harm upon Joe. The situation escalates when an attempt is made on Anna’s life. Confounded by the danger surrounding her, Murdoch's investigation uncovers a much more sinister side to the murdered man’s past than anyone could have anticipated.