"Dunleavy" by Mark Hannon

Dynastic succession in criminal organizations rarely goes uncontested. When Leo Dunleavy, Chief of Buffalo’s Homicide Squad, rolls up on a burning house with a mob underboss bleeding in the front yard and money blowing around in the street, he knows a war has erupted to succeed the declining Don. In the ensuing investigation, Dunleavy pursues a mysterious killer who has eluded him for three decades and struggles with the moral dilemma of how far he is willing to go to get justice. The criminals use arson, bombs, and guns without hesitation. What is Dunleavy willing to do to stop them?