Malcolm Lewis:
If you like crime noir you'll love this. Written in 1963, this is the first novel in the Parker series. I consumed it one greedy gulp this morning. I loved the fast-paced plot and the spare, no-frills prose. Apparently the basis of the 1967 movie Point Blank starring Lee Marvin and already added to my Netflix queue.
Check out the Amazon reviews for more opinions.
I'm delighted to see there are another 10+ Parker novels. I'll be reading them all in the very near future.