Unknown bones, untold secrets, and unsolved crimes from the distant past cast ominous shadows on the present in the dazzling new thriller from New York Times bestselling author Tess Gerritsen.

Present day: Julia Hamill has made a horrifying discovery on the grounds of her new home in rural Massachusetts: a skull buried in the rocky soil–human, female, and, according to the trained eye of Boston medical examiner...

It's June in Montreal, and Dr. Temperance Brennan, who has left a shaky marriage back home in North Carolina to take on the challenging assignment of Director of Forensic Anthropology for the province of Quebec, looks forward to a relaxing weekend in beautiful Quebec City. First, though, she must stop at a newly uncovered burial site in the heart of the city. The remains are probably old and only of archeological interest, but Tempe must make sure...

In Alberta, Canada, an eminent paleontologist disappears from a dinosaur dig site, and at the Cambridge Forensic Center, Kay Scarpetta receives a grisly communication that gives her a dreadful reason to suspect this may become her next case. Then, with shocking speed, events begin to unfold. A body recovered from Boston Harbor reveals bizarre trace evidence hinting of a link to other unsolved cases that seem to have nothing in common. Who is behind...