Repairman Jack is a pretty good character, as flawed tough guys are concerned. My father recommended F Paul Wilson to me, I think he’s read most of the Repairman Jack series, and I started off with All the Rage
He refers back to an incident in a previous book ( The Tomb ), but you get enough background, in both Rage and this one, Conspiracies, to get by without feeling like you really need to go back and read it.
A really good, quick read. Perfect plane reading.