Savage Fire

To save a friend, the Executioner comes home with a vengeance

In a Pittsfield cemetery Mack Bolan looks down at his family plot. A space has been left for him, but Bolan is not yet ready to die. His war against the Mafia has taken him around the globe, and now he is back where it all began—not to avenge his family, but to save a friend. Undercover cop Leo Turrin has spent years climbing the ranks of organized crime, risking his life and his family to help put mobsters behind bars. Now the mobsters are about to strike back.
 
The local kingpin suspects a rat in his ranks and is close to sniffing out Leo. To save his friend’s life, Mack asks him to sit tight so he can shore up Leo’s cover story the only way he knows how: with a gun.

Savage Fire is the 28th book in the Executioner series, but you may enjoy reading the series in any order.