Do Bay seniors believe vampires lurk in the high net worth Nob Hill neighborhorhood? At least one does. Playwright Kitty Burns has been leading Vampire Tours there for 10 years, channeled by the spirit of Mina Harker, a 127-year old vampire who sleeps during the day in a nearby church. The nocturnal ramblings start at 8 pm, run for 2 hours, cost $20 and stir together Ms.Burns’ dark fantasies with actual San Francisco history. The last time I checked there were availabilities this weekend. If this really piques your interest you can purchase the entire tour. It is scheduled to close at the end of the year.