Giacomo Giammatteo  
Murder Has Consequences [EPUB ebook] 

For a select few people, friendship lasts forever. Nicky Fusco and Frankie Donovan were friends like that, but that was years ago. Now Frankie’s a detective in Brooklyn’s Homicide department, and Nicky is a reformed hit man. But when Frankie gets in trouble—and the law can’t help him—he turns to Nicky.

The problem is that Nicky promised his family, and God, that he’d go straight.