The body count in Teatro Bastardo’s improvised show is high, but the performers are more focused on getting laughs than on giving us chills. Using a title suggested by the audience, they spoof the mayhem and melodrama of 1930s monster movies by fictional director Brunst. On the night I attended, “The Claw” was the evening’s inspiration, and a fez-wearing musicologist feverish about his work began a ruthless rampage in Ohio. His motives were muddy, but director Joe Janes’s cast wasn’t much concerned with straightforward storytelling anyway. Even after cheating by leaving the stage near the end–apparently to plot a denouement–the group couldn’t wrap things up neatly. What we enjoy are the silver-screen characterizations (haughty socialite, anxious foreign maid, puffed-up playboy) and the confidence with which the ensemble members interact, accompanied on piano by Mike Descoteaux. Through 10/30: Sat 11:30 PM. Second City Training Center, Donny’s Skybox Studio, Piper’s Alley, 1608 N. Wells (fourth floor), 312-337-3992 or 877-778-4707. $5-$8.