1. Chris O'Donnell as G. Callen and Bar Paly as Anastasia "Anna" Kolcheck
Callen, Sam, and Anna (Bar Paly) are in Russia, where they craft a plan to break her father and his CIA agent companion out of prison. In Los Angeles, Kensi and Deeks take Eric into the field on an assignment. Plus, Special Agent G. Callen finally learns what the G in his name stands for, on "Matryoshka, Part 2."