Hit Me by Lawrence Block
Keller left New York City for New Orleans after his last job. He now has a new wife and toddler, the last thing he expects is for his former employer to call him up, but she does. Dot has a job for him, if he’s interested. Since his business restoring houses damaged from Katrina is drying up due to the economic climate, he is looking for work to support his family, and his hobby. Keller, now Nicholas Edwards, is an avid stamp collector. This phone call changes things; he’s back in business, as a hit man for hire.
The book reads like multiple short stories with each job being another part of the book. Keller/Edwards is a nice guy, for a killer, so you want him to succeed, plus the people he is hired to silence are not nice people. It’s interesting seeing him set up his new business, setting up stamp sales, and learning so much about such an obscure (at least in today’s world) hobby.
A good choice on audio because you can’t skip the stamp parts which actually are quite fascinating, but if reading I have to admit I may have skimmed the philately lessons.