Serious comedy. Hilarious drama. Secret Improv Society's theatrical shows are a raucous blend of improvised sketches and songs: a fast-paced, interactive improvisational revue. Hilarious, bright and completely original, Secret Improv Society is a hot San Francisco ticket. The company regularly features guest improvisers. San Francisco 's best improvisers, comedians, musicians and audience volunteers join the quick-witted cast in applying their unique creative process to whatever the audience throw their way. The troupe is currently playing at the historic Shelton Theatre, around the corner from Union Square. Secret Improv Society is great for a date, a night out with friends, or get a group of tickets for a birthday or a special occasion . Shows end by 11:30. Plenty of time to catch your BART train.