You will watch American Dad! Season 6 Episode 99 – Best Little Horror House in Langley Falls online for free episodes with high quality. Online episode guide, American Dad! Season 6 Episode 99 – Best Little Horror House in Langley Falls Best Little Horror House in Langley Falls After years of hosting the scariest haunted house in the neighborhood for years, Stan finds himself outdone by Buckle. Francine makes things worse when she finds herself returning and declares that it is impossible to beat him. Depressed, Stan goes to Roger for advice and Roger suggests he use his CIA influence to get real body parts and instruments. Stan decides to pull in five of the most dangerous serial murderers in the area. However, the killers sitting in their cell fails to scare anyone so Roger decides to turn them loose, forcing Stan, Francine, Roger and Klaus to take cover in the kitchen. Stan apologizes for getting them into the mess and Francine admits she should have been more supportive.