6x12 'Golden Hammer' (synopsis)

"The Golden Hammer" - Jane and the FBI investigate the murder of a high-tech cartographer who may have unearthed a spy ring before his death. Meanwhile, Rigsby and Van Pelt find themselves on the trail of an alarming conspiracy, on THE MENTALIST, Sunday, Jan. 12 (10:00-11:00 PM, ET/PT) on the CBS Television Network. Navid Negahban ("Homeland") guest stars as Hassan Zarif, a man with information about the cartographer's death.