Dirty Old Town (Shane Cleary Mystery #1)

Shane Cleary, a PI in a city where the cops want him dead, is tough, honest and broke. When he's asked to look into a case of blackmail, the money is too good for him to refuse, even though the client is a snake and his wife is the woman who stomped on Shane's heart years before. When a fellow vet and Boston cop with a secret asks Shane to find a missing person, the paying gig and the favor for a friend lead Shane to an arsonist, mobsters, a shady sports agent, and Boston's deadliest hitman...