(L-R): Jared Padalecki as "Sam" and Jensen Ackles as "Dean" in SUPERNATURAL on The CW. (credit: Jack Rowand/The CW )

 
Sam (Jared Padalecki) and Dean (Jensen Ackles) are once again on the FBI’s “Most Wanted” list when two Leviathans clone the brothers and go on a killing spree. The subject of a nationwide manhunt, Sam and Dean need to drop off the grid so Bobby (Jim Beaver) sends them to Frank Deveraux (guest star Kevin R. McNally), a quirky surveillance expert, for help. Meanwhile, Bobby continues to search for a way to kill the Levianthans, or at least slow them down, so the real Winchesters can stop their evil doppelgangers. John Showalter directed the episode written by Robbie Thompson.

Catch Supernatural, Fridays 9/8c.