The "master of ticking-bomb suspense" Jeffery Deaver brings us the latest thriller featuring his most beloved protagonists. Lincoln Rhyme and Amelia Sachs are back – on the hunt for a criminal terrorising New York City A killer without limits He comes into your home at night. He watches you as you sleep. He waits. A city in turmoil He calls himself ‘The Locksmith'. No door can keep him out. No security system can catch him. And now he's about to kill. A race against time to stop him Nobody in New York is safe. Now it's up to Lincoln Rhyme to untangle the web of evidence and catch him. But with Lincoln under investigation himself, and tension in the city at boiling point, time is running out…