Skeleton Crew - S1.E22

A string of burglaries have occurred and Mike is convinced the Skeleton Crew, an underground secret society with ties to Benjamin Rush High School, is to blame. Yet Amanda and Owen are doubtful of Mike's accusations since he's a staunch believer of urban myths. Owen desperately tries to woo Isabelle, a new Junior transfer, but has no idea she's actually an undercover detective who's also pursing the Skeleton Crew. She also believes that the Supah Ninjas are the ones behind the attacks at Benjamin Rush High School. Mike quotes his grandfather "Things aren't always what they appear to be." When Isabelle goes to the school with backup, they unmask the ninjas, which actually turns out to be the Skeleton Crew (The Supah Ninjas switched masks with them before Isabelle and Martin arrived). The next day, Mike is now Owen's wingman, for a girl named Greta. Mike and Amanda find a note which meant "This isn't over. S.K. (Skeleton King)" meaning the Skeleton Crew may appear in future episodes.