The Dollmaker by Mary Burton

Dr. Tessa McGowan had never seen anything quite like it. But the mutilated bodies on her exam table tell a stunningly macabre tale: someone with a twisted mind is kidnapping women and altering their faces to resemble real, life-size dolls. As a forensic pathologist, it’s her job to aid the agent leading the case—even if that agent is her estranged husband.
Twelve years ago an unspeakable tragedy destroyed Dakota Sharp’s world. Haunted by the ghosts of his past, he’s devoted himself to capturing killers. His only regret is that it cost him Tessa. Now, as the Dollmaker case brings them together—and raises his suspicions that he’s crossed paths with this deranged psychopath before—they may just have their second chance. But it seems Dakota’s not the only one who wants to make Tessa his own…
She may be the Dollmaker’s next target, but Tessa has no intention of winding up as another toy on his shelf. Can she and Dakota stop this ghastly killer before his next deadly playdate?