Thrillpeddlers have been performing authentic Grand Guignol horror plays, fetish vignettes, and lights-out spookshows in San Francisco for more than 15 years.
This is a great venue for independent theater and smaller scale productions. There doesn't appear to be a poor seat in the house. A few useful things to note:
1) The signage to the venue is poor. If you've never been there, you'll have too look for it a bit. The main entrance seems to be from the parking lot.
2) There is only one bathroom for the whole theater. Just keep this in mind.