Martin makes contact with a woman who may be linked to his past. Meanwhile, Dmitry embarks on a mission in 2001 Prague to find a wanted war criminal, yet concerns rise that Dmitry may be going too far with his infiltration techniques.

Kate goes missing in present-day Prague. Also, Martin makes a risky proposition; Gabi learns that Blazek may have dangerous ties to Tamir; Dmitry is threatened in 2001 Prague; and suspicions rise about Terrence.

A threat on a summit is investigated by Martin and Nina, who search for Tamir's associate in present-day Prague. Elsewhere, two assassins spin a deadly plan into motion; Tamir's wife gives orders to Beslan; and Dmitry struggles to complete his mission.