Jack Valentine Thrillers Books in Order

The Jack Valentine Thrillers move away from the courtroom and into private investigator territory. Jack Valentine works in Chicago, and his cases often start with one desperate client and one ugly public story. From there, he follows the evidence into media companies, political circles, family secrets, crime gangs, and people with enough power to make witnesses disappear.

Jack is not an armchair detective.

In Gates of Power, a famous newsreader is murdered, and the evidence points at a professional computer gamer named Alfie Rose. Valentine is hired to dig beneath the easy answer, and the case puts him up against lawyers, media pressure, and far-right politics. Stolen Power, later also presented as The Hostage, sends him into a kidnapping case involving the daughter of a wealthy and careless businessman. The Shooter begins with a death the police call suicide, then turns toward the possibility of a serial killer.

The series works because the cases are personal and public at the same time. A client may want one person cleared or one missing person found, but Jack usually uncovers a larger pattern. Fraud, corruption, and violence sit behind the first crime, and the people benefiting from that system do not want a private investigator pulling at the loose thread.

Chicago gives the books a busy, hard-edged setting. Valentine moves through offices, neighborhoods, police circles, and political networks, often with a sense that everyone has a reason to hide something. The series is more action-oriented than O'Mahoney's pure legal thrillers, but it still shares the same concern with evidence, motive, and the gap between public truth and real truth.

You can read many of the Jack Valentine books as standalone mysteries, since each has its own central case. Still, Gates of Power is the best place to start. It introduces Jack's grief, methods, and stubborn need to keep asking questions after everyone else thinks the case is closed.