In this electrifying thriller from the author of Red Warning and The Night Agent, an attack on the White House sends the President and his top aides to take shelter in a top secret government facility buried deep underground?but they soon discover the threat is locked inside with them.

Assume the worst. Code Black.

The day that every secret service agent trains for has arrived. The White House has been breached; the President forced to flee to a massive doomsday bunker outside DC to defend against whatever comes next. Only the most trusted agents and officials are allowed in with him?those dedicated to keeping the government intact at all costs.

Among these is Erik Hill, who has given his life to the Secret Service. They are his purpose and his family, and his impressive record has made him a hero among them. Despite his growing disillusionment from seeing Washington corruption up close, Erik can't ignore years of instincts honed on the job. The government is under attack, and no one is better equipped to face down the threat than he is.

The evidence leads him to a conspiracy at the highest levels of power, with the attack orchestrated by some of the very individuals now locked in with him. As the killers strike inside the bunker, it will take everything Erik Hill has to save his people, himself, and his country.