An elite, cerebral FBI team that mainly relies on its collective intellect but doesn’t shy away from action launches what should be a stellar new series from Edgar nominee John McMahon. "Head Cases," ...

In this sterling series launch from McMahon (the Detective P.T. Marsh novels), investigative savant Gardner Camden tracks a vigilante who targets serial killers. Camden—a member of the FBI’s Patterns ...

If you like rooting for underdogs, you’ll love the career-challenged crew of eccentric crime-solvers in John McMahon’s “Head Cases”: a small FBI unit called Patterns and Recognition—PAR for short. The ...

In John McMahon’s suspenseful “Inside Man” — the second book in his intriguing “Head Cases” series — FBI agent Gardner Camden sees patterns and puzzles to be solved where others just see the ordinary.