Alan Smyth

A failed jewelry store robbery results in a murder that finds Nick (David Giuntoli) and Hank (Russell Hornsby) immersed in a hunt for rare coins. Nick soon learns that these coins have an unsettling effect on whoever possesses them, as Hank and Captain Renard (Sasha Roiz) begin to exhibit unusual behavior. Meanwhile, a mysterious old friend of Aunt Marie’s (guest star Titus Welliver, "Lost") comes to Nick with information about his family and what led to his parents' death. Bitsie Tulloch, Silas Weir Mitchell and Reggie Lee also star.

When Jenny returns from her trip to Europe, the entire NCIS team will be forced to take a Homeland Security polygraph test, and the deepest secrets of each agent will be revealed. Plus, an unarmed Tony and Jeanne are held hostage by a ruthless drug dealer.

Cooper and the team search for a serial killer who is shooting people in crowded areas; Beth is put in danger when she and Prophet go under cover.