Such a Pretty Girl by Tess Diamond

In a gripping romantic thriller from Tess Diamond, an FBI profiler becomes a killer’s deadly obsession…
In Grace Sinclair’s bestselling crime novels, the good guys win and the bad guys always get caught. As the FBI’s top profiler, she knows that real life is rarely so straightforward. But her new case isn’t just brutal—it’s also personal. The victims look like Grace. And the FBI recruit assigned to her team is trouble of another kind.
This isn’t how Special Agent Gavin Walker imagined running into Grace again. Two years ago they shared one earth-shattering night, then she vanished from his life. She’s brilliant, fiercely independent, and in mortal danger from a killer masterminding a twisted game …
The body count is rising. Entangled in the case and in each other, Gavin and Grace are running out of time and chances. And as Grace puts the pieces together, she knows she’ll have to confront her own deepest secrets before the final, fatal move is played.