The Devil's Edge (Ben Cooper and Diane Fry Series #11) in Bloomington, MN

When nobody's home, the Savages roam ...
The newspapers call them the Savages: a band of home invaders as merciless as they are stealthy. Usually they don't leave a clue—but this time, they've left a body. The first victim is found sprawled on her kitchen floor, blood soaking the terracotta tiles. Before long, another corpse is discovered, dead of fright. As the toll rises, it's up to DC Ben Cooper and DS Diane Fry to track down the killers. But the enemy isn't who they think it is. Beneath the sinister shadow of a mountain ridge called the Devil's Edge, a twisted game is under way, a game more ruthless than the detectives can imagine.
Packed with nerve-jangling suspense and moody atmosphere, this is a thriller to rival the very best of Peter Robinson and Peter James.