Tribeca Blues — Jim Fusilli

In this “gripping mystery”from the author of Closing Time, New York City PI Terry Orr finally confronts the madman who murdered his wife and son (Providence Journal-Bulletin).
 
Terry Orr has taken on his share of baffling cases -- but he's never worked for a dead man. When his friend Leo Mallard passes away, his last request is for Terry to track down his duplicitous ex-wife who stole the profits from the restaurant they owned together. But as much as Terry wants to honor his friend's request, all his concerns are about to be overshadowed by a shocking discovery.
 
Terry has just found Raymond Montgomery Weisz -- the man who killed his wife and son. Finally, he will have his vengeance. But what he learns about that fatal day is far from what he ever expected -- and Terry must decide if the truth he's been searching for is worth destroying the life he's spent so long rebuilding . . .
 
Written with “poetic intensity,” this is a hard-hitting, heartbreaking story of obsession, redemption, and revenge that will keep murder mystery fans riveted (Kirkus Reviews).

Tribeca Blues is the 3rd book in the Terry Orr Mysteries, but you may enjoy reading the series in any order.