The Middle: Season 9, Episode 4

9 - 4: Halloween VIII: Orson Murder Mystery

As Halloween approaches, Frankie discovers that a woman had died in the bathtub of the Heck house close to 50 years ago, and Frankie and Brick become convinced that she was murdered and, much to Mike's chagrin, attempt to track down and find the murderer. Meanwhile, Axl and Lexie become frustrated over losing their alone time when Sue insists on hanging out with them wherever they go.