Emma Solano knew she had her hands full when she married her husband, British agent Earl. But now that they've had a child, she's expecting their life to settle down. She couldn't be more wrong.

When Earl agrees to fly to England to help the Bureau track down a double agent, Emma has every confidence that he will return quickly. But when an urgent news flash announces that Earl has been shot during an attempted assassination of the Prime Minister, all bets are off.

Emma flies across the ocean to help care for Earl, but shortly after arriving, she realizes she and her husband have fallen into a dangerous and life-threatening trap. With Earl's wounds a liability, Emma must use all her wits to destroy the enemy before it's too late.