London is under attack. An unknown number of its citizens are dead. Many more lives hang in the balance as a group of highly trained gunmen storm the luxurious Stanhope Hotel on Park Lane, demanding the government meet their requests within five hours—or they will blow up the building and everyone still inside it.
Shots ring out. Some guests panic. Others text their loved ones. A few try to escape. All are united by their desire to live. And at the center of it all is one man who has information so dangerous that it must be kept safe—at any price. Darkness falls. The gunmen become increasingly violent. One question is on everyone’s mind: Will any of them survive the night?