Sept. 16 (UPI) -- Liev Schreiber voices agent Sam Fisher in the first trailer for Netflix's upcoming animated video game adaptation, Tom Clancy 's Splinter Cell: Deathwatch . Fisher, now sporting grey hair and a thick beard, returns to action and easily takes down a number of armed guards in the clip released on Tuesday. Fisher is tasked with helping a new recruit unravel a global conspiracy that is tied to his past. "This job makes you question everything. But we have to keep trying,"