Ahh, another good episode....that must have inspired a current TV show! I am pretty sure this episode "the Mortgage", written by Sam Dann, inspired the current TV Show THE AMERICANS about Soviet spies living as Americans with homes and jobs. The way he said he is an American makes me think it inspired even the name of the show, besides the general idea. Other CBS Radio Mystery Theater episodes also inspired (though they were not credited), to greater or lesser degrees, many movies, TV Shows  and Novels, including two movies this year: the 2015 Movie EX MACHINA must have been greatly inspired by "Life Blood" written by Murray Burnett, and the 2015 Movie THE AGE OF ADELINE must have certainly been inspired by "Age Cannot Wither Her" written by Sam Dann. Certain aspects of The TV Show LOST must have been inspired by "No Way Out", about mysterious recurring numbers, and an older movie, the original THE OMEN seems likely to have been inspired by the episode "Sacrifice in Blood". Also, listening to the episode "Charnel House" there is a sense that the mood, and settings might have inspired the novel and movie SHELTER ISLAND. Of course, there is no way to know for sure...what do you think?