When mother of two Shaundra Murr is run over in front of her house, officers initially suspect a hit and run. Until Lt. Joe Kenda uncovers evidence proving Shaundra's murder was a crime of passion, and the killer was driven by jealousy and rage.

Eric Houston is found stabbed to death in a seedy motel, but the ensuing investigation is stymied by a long list of suspects. Lt. Joe Kenda refuses to let the case run cold, and deploys a groundbreaking new technology to catch the killer.