A band of vigilante executioners roam London's hot summer nights, abducting evil men and hanging them. Sentenced to death is the gang member who abused vulnerable girls, the wealthy drunk driver who mowed down a child and the hate preacher calling for the murder of British troops. As the bodies pile up and riots explode all over the sweltering city, DC Max Wolfe embarks on his most dangerous investigation yet; hunting a gang of killers who many believe to be heroes...