A Patch of White makes an even dozen for Spencer Hardesty when an old friend shows up at his office with stories of uninvited night visitors at his new job and they're leaving more behind than just sleepless nights. Spencer must find out who they are and just exactly what they're up to and still manage to protect an innocent that's gotten too close to the dangerous game they're playing; and they don't play fair. Can Spencer Hardesty beat the devil at his own game before it's too late? Or will the angel pay the price?