Mud is Thicker Than Water Ben 10: Omniverse : Season 4 Episode 5
TV-Y7 (FV) Cartoon Network 22m
Aired: November 2nd, 2013 @ 9:00 AM EST on Cartoon Network
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.
