Determined to track down Blunt and warn him about Yassen's return, Alex unknowingly puts himself on a collision course with The Department, who are simultaneously hunting a dangerous cyber-terrorist.
Alex refuses to walk away from his investigation into the attack on Ed Pleasance. With Sabina and Tom's help, he discovers a new lead connecting it to the Pentagon hack, putting him in the crosshairs of the hacker who goes by the name Smoking Mirror.