Special Agent Parker Glinn has been on leave for the last two years, emotionally shattered after the murder of his wife. Transferred to Intelligence, his assignment—find a psychic vigilante roaming the streets of San Francisco—is supposed to be a gentle re-entry to field work. But when a killer from his past follows him across the country, Parker is at risk of drowning in the mire that nearly claimed his sanity—and his life—two years earlier.