The tenth and final season of longrunning British espionage thriller quotMI5quot sees Harry return to his post as head of Section D, wherein his Russian opposite Ilya Gavrik Jonathan Hyde proposes a strategic partnership between their countries New quotspooksquot Erin Watts Lara Pulver and Calum Reed Geoffrey Streatfield join the fight to prevent all enemies of the alliance from sabotaging the plan and instigating a war
