LEONARD, SHELDON AND THEIR SCIENTIST SIDEKICKS ATTEND PENNY’S HALLOWEEN PARTY, MAKING FOR ONE LONG SOCIALLY AWKWARD EVENING THAT ENDS WITH A BANG, ON “THE BIG BANG THEORY,” TONIGHT ON CBS

Leonard, Sheldon, Wolowitz and Koothrappali undertake a challenging and risky experiment-attending the Halloween party being thrown by their hot neighbor, Penny, on THE BIG BANG THEORY, Monday Oct. 29, (8:30-9:00 ET/PT), on the CBS