Single Cell Productions will present Purgatory XXXIX, themed "Your Prescription for Pain" this Saturday, Aug. 9 at Amos' Southend. Expect erotic performances from fetish pros, rope suspension and a concoction of operations in Dr. Spankenstein's medical lab. DJs will also spin Industrial, electronic, synth-pop vibes. If you've never been to a purgatory show then it's time to get the courage. It's certainly the cure to a boring Saturday night. $15. 8:30 p.m. Amos' Southend, 1423 South Tryon St. 704-377-6874. www.singlecell.us.