 Sydney and Vaughn reach a crossroads as they try to turn a professional relationship into a personal one during a mission to recover an experimental gyroscope. Meanwhile, Jack struggles to outwit the persistent SD-6 security expert, Ariana Kane, as she tightens the noose of suspicion around him of being Sloan s blackmailer. But Sloan is eventually revealed to know more than he claims: there never was a blackmailer, and Emily is really alive and in league with Sloan to get away from the Alliance!