S3·E18 Scam Camp Much?

The spies investigate a strange affliction where numerous talented teens (entertainers, athletes, etc.) mysteriously have lost their abilities. The spies trace the phenomenon to a talent camp, where teens go to further hone their skills. The spies go undercover and find that an evil and bitter villain is able to somehow extract the talent from the teens and administer it to herself. The spies try to defeat the villain before they lose all of their own personal talents. In a b-story, the girls decide to throw their first big house party.