The Hanging Club by Tony Parsons (Max Wolfe #3)

A band of vigilante executioners roam London's hot summer nights, abducting evil men and hanging them by the neck until dead.

SENTENCED TO DEATH
- The gang member who's abused vulnerable girls.
- The wealthy drunk driver who's mowed down a child.
- The hate preacher calling for the murder of British soldiers.
As the bodies pile up and riots explode across the sweltering city, DC Max Wolfe hunts a gang of killers who many believe to be heroes.
And discovers that the lust for revenge starts very close to home ...