Dr. Alexander Gregory is a forensic psychiatrist whose practice includes violent criminals. One of these is Cathy, a woman diagnosed with Munchausen syndrome by proxy, who has been incarcerated for years following the murders of two of her three children. Dr. Gregory seems to be particularly fixated on this patient, trying to elicit from her the motive for the killings. However, Gregory’s practice needs to be put on hold when the doctor is called to a small town in Ireland to profile what might be a serial killer.

Once in Ireland, there are suspects a plenty, including the two police officers in charge of the case who are brothers, neither of which has a solid alibi. There’s also the town mayor, the police officers’ mother, and a few other random suspects.

This sounds like a good premise for a great who-dun-it, but unfortunately, for me, Impostor didn’t deliver on its promise. The characters, with the exception of Dr. Gregory, seemed to lack depth and fullness. In addition, the book dragged and I found myself skimming through Gregory’s cerebral musings trying to find some meat to hang onto. There is a twist at the end of the novel, but it wasn’t extraordinary enough to make me unhappy that the book was finally over or want to learn more about Dr. Gregory.

In summary, it’s a decent read and, hopefully, future books based on Alex Gregory will be more stimulating. Three stars.