One misstep puts a man — and everyone he loves — in the path of a relentless killer. The scion of an old-money San Francisco family, Daniel Brasher left his well-paying, respectable money-manager position to marry his community organizer wife and work at a job he loves, leading group counseling sessions with recently paroled violent offenders. One night he finds an envelope — one intended for someone else that was placed in his office mailbox by accident. Inside is an unsigned piece of paper, a handwritten note that says, “Admit what you’ve done or you will bleed for it.” The deadline in the note has already passed, and when Daniel looks into it, he finds that the person to whom the envelope was addressed was brutally murdered.