Mrs Cattermoles' house (a.k.a. 'The haunted House') was first seen in the very first episode of The Mystery Files Season 1. But It wasn't actally haunted, It was just a set up done by Mrs Cattermole to drive away the door to door sellers, because she loafed of them. But when the three found out that the The Haunted House Monster was her, she told them not to tell the police and gave them each twenty dollars, and some biscuts.