“We’re going to murder people who need to be murdered.” So begins a press release from a mysterious group known only as “The Five,” shortly after a vicious predator is murdered in San Francisco. The Five is made up of vigilante killers who are very bored…and very rich. They target the worst of society—rapists, murderers, and thieves—and then use their unlimited resources to offset the damage done by those who they’ve killed, donating...