
When a London bombing shatters her world, US diplomat Kate Wyler faces the ultimate test as her suspicions reach the top levels of the British government.

After rushing back to London, Kate shares her suspicions about the bombing. The search is on for Lenkov — and Roylin. Eidra delivers devastating news.

Eidra helps sneak an unannounced guest into Grove's funeral, Kate realizes she might have made a bad call before the bombing, and Stuart speaks his mind.

A lavish Fourth of July party gives Kate a chance to help Dennison, who sees an opportunity after the prime minister's announcement about Lenkov.

Kate proposes a unique solution to the Roylin problem. A risky plan unfolds at the prime minister's event in Scotland. Stuart confronts his feelings.