I liked his recent novella, Minder, even better.
This is a dark and gritty story, suitable for a movie starring Liam Neeson. A crime boss in an unnamed city learns that a contract has been put out on a local woman cop. He doesn’t want a cop killing in his town. It’s bad for business. So he hires “Fitz,” a professional killer and IRA veteran, to protect her.
The story is well-written, the characters believable, the dialogue excellent. It’s simply a workmanlike hard-boiled story, entirely satisfying to the fan of the genre. The sort of thing Jack Higgins would have written before he ran out of steam. I wished it longer.