Ben 10: Omniverse - Mud is Thicker Than Water

Seizoen: 2 - Aflevering: 15 / 56 - Eerst uitgezonden: 02 november 2013 - Episode ID: 829522

Ben, Gwen and Cousin Lucy try to find out how Psyphon's thugs are getting Plumber technology. Gwen suspects that Lucy is the mole because of all her shape-shifting abilities, and her love of tricks when she was younger.