In the meantime, Charlie (guest star Kaylee DeFer) is finally starting to feel less like a fish-out-of-water with Serena and her friends, but complications present themselves when Charlie is invited to attend the Constance Billard alumni fundraiser. Additionally, Jack Bass' (guest star Desmond Harrington) return to the Upper East Side sets off a chain of events that could end up destroying Chuck and those closest to him.
"Shattered Bass" will air Monday, May 9 at 9/8 c on The CW. The show will wrap up its fourth season with "The Wrong Goodbye" which is set to air a week later, on May 16 to be exact.