In a profession like this, you're bound to make enemies...

An eye...

It all starts when Dr Temperance Brennan finds a box on her porch. Inside is a fresh human eyeball with GPS coordinates etched into it. They lead her to a macabre discovery in a Benedictine Monastery, and soon after she discovers a mummified corpse in a state park.

...for an eye

There seems to be no pattern to these killings, except that each mimics a killing connected to something a younger Tempe experienced, or barely escaped. Someone is targeting her, and she needs to figure out why before they strike again.

And then her daughter Katy disappears.

Someone is playing a dangerous game with Tempe.
And they won’t stop until they have taken everything from her...

Electrifying, heart-stopping and compulsive, this is Tempe’s most personal and dangerous case yet...