Using computers like a grandmaster wizard Austin private investigator Alexandra Lovell enables people to flee from their lives to begin anew in a different identity and location, but they must adhere to the rules of never making contact with their past. Alex assisted Melanie Bess escape her abusive police officer husband, Craig Coghan, but foolishly she broke the prime commandment and communicated with her past. Melanie has become Untraceable and Alex believes foul play occurred with she strongly feels Craig as the culprit.

Alex searches for any forensic evidence that will affirm her fears. She persuades skeptical police detective Nathan Devereaux and the Delphi Center "Tracer" Mia Voss to help her. The trio begins to ferret out Craig's secrets while Alex's attraction for Nathan grows. He feels the same way about her, but each new clue adds a Thread of Fear running up and down his spine for Alex's safety from what increasingly seems a nasty deadly cop.

This is a terrific mystery with a nice romantic subplot in the background enhancing the strong investigative Tracers thriller. The cast is solid especially the lead couple and the villain; while secondary characters add depth especially with forensics science. Fans will enjoy Laura Griffin's super romantic mystery with the inquiry superseding the loving.

Harriet Klausner