The "Sanatarium" exterior is actually the Barkley house somewhat redressed and shot from a different angle.
Robert Middleton also appeared in the episode called Rimfire. He played the character of a wealthy miner whose friends with Jarrod Barkley.
Closing credits: The events, characters and firms depicted in this photoplay are fictitious. Any similarity to actual persons, living or dead, or to actual firms, is purely coincidental.