Episode 2 (S01E02)

Tom Mallory, the next name on the Soviet list, is a violent individual locked away for assault. His imprisonment hampers MI5's efforts to prevent Operation Glass, forcing Daddy into a difficult position. Meanwhile, Joe, tormented by memories of his lover’s murderer, grapples with his involvement in the unfolding conspiracy. As news of a potential nuclear strike surfaces, Joe realizes he must take drastic action to ensure that crucial information doesn’t reach the enemy, leading him to make a perilous choice.