Mrs. Haley takes her horse to blacksmith Bob to have its shoes checked since she'll be traveling alone by buggy to meet her husband at the train station. She's delighted when Dr. Tabor, whose wife was one of two women murdered in the woods along the way, asks if his sister can ride along. As they approach the spot of the two unsolved crimes, the behavior of Mrs. Haley's passenger becomes unsettling. (thetvdb.com)