The seventh novel in the bestselling Lincoln Rhyme series sees Rhyme attempt to catch his cleverest opponent yet...

How long does it take to die?
TICK
His victims would say forever ...
TOCK

At each meticulously planned scene, the killer leaves his victims to die slowly, a clock counting down their last minutes on earth. He calls himself the Watchmaker. And it's only a matter of time before he strikes again. But he didn't count on Lincoln Rhyme. Physically, he may face unimaginable challenges, but mentally, he has no limits. With Amelia Sachs as his eyes and ears - and heart - Rhyme is on the Watchmaker's trail within seconds. However, he's not the only one gifted with a calculating intelligence, and this time, his wits must be sharper than ever if he's to catch a killer cold as the moon.