S5, E5: Jack becomes fixated on using the desperate situation of Sadik Marku, the Albanian mob boss who had an ominous role in one of the team's previous cases, to unearth evidence against him. When Jack gets the FBI involved in the case of Sadik's missing mistress, Julia and their eight-year-old son, Samantha questions whether Jack is more interested in going after Sadik or finding his loved ones.