Sister City (Part I)

After five people are found dead on a civilian passenger jet in flight, the team investigates how they died. However, the case takes a spin when Dwayne Pride calls and reveals that one of the passengers was Luca Sciuto, Abby's brother, leaving the team trying to figure out not only where Luca is, but if he was involved in the attack. Meanwhile Tony confirms that he and Zoe have broken up.