«Robert B. Parker's Slow Burn» by Ace Atkins

Boston PI Spenser faces a hot case and a personal crisis in the latest adventure in the iconic New York Times bestselling series from author Ace Atkins.
The fire at a boarded-up Catholic church raged hot and fast, lighting up Boston's South End and killing three firefighters who were trapped in the inferno. A year later, as the city prepares to honour their sacrifice, there are still no answers about how the deadly fire started. Most at the department believe it was just a simple accident: faulty wiring in a century-old building. But Boston firefighter Jack McGee, who lost his best friend in the blaze, suspects arson.McGee is convinced department investigators aren't sufficiently connected to the city's lowlifes to get a handle on who's behind the blaze – so he takes the case to Spenser. Spenser quickly learns not only that McGee might be right but that the fire might be linked to a rash of new arsons spreading through the city. Spenser follows the trail of fires to Boston's underworld, bringing him; his trusted ally, Hawk; and his apprentice, Sixkill, toe-to-toe with a dangerous new enemy who doesn't play by the city's old rules. Spenser has to find the firebug before he kills again – and stay alive himself.'Robert B Parker's Spenser is one of the best private detectives in fiction ' – Sunday Telegraph
'Spenser is as tough and funny as ever, and Atkins has become a worthy successor' – Booklist