When a magical plague is released in a Depression-era New York soup kitchen, private detective Alex Lockerby finds himself in a desperate hunt to catch a madman before he can strike again. His investigations lead Alex to a famous thief, a daring heist, and the search for a mythic book of ancient magic, but none of that brings him any closer to finding the man responsible for the massacre. With the police and New York’s Council of Sorcerers desperate to find the culprit, Alex becomes a suspect himself, thanks to his ties to the priest who ran the soup kitchen.

New York Police Lieutenant Danny Pak has a problem. When one of his officers calls him out to an unusual crime scene, Danny realizes that it’s terrifyingly similar to something the department thought was dead and buried. Across town, Agent William “Buddy” Redhorn of the FBI has two problems. He’s been assigned a potentially career-ending case with magical ties, and his sorceress boss is out of town. The case involves a stolen statue that belongs to the government of Brunei, but the more he chases the thieves, the more bodies begin to drop. Bodies affected by an unknown magic.

When marine private Oliver Chadwick Gardenier is killed in the marine barrack bombing in Beirut, somebody who might be Saint Peter gives him a choice: Go to heaven, which, while nice, might be a little boring, or return to earth. The Boss has a mission for him, and he's to look for a sign. He's a marine: He'll choose the mission. Unfortunately, the sign he's to look for is "57". Which, given the food services contract in Bethesda Hospital, creates some difficulty. Eventually it appears that God's will is for Chad to join a group called Monster Hunters International.

If I’m to restore the druids to their former glory, I’ll need a safe place to train my recruits. Ideally, someplace where they won’t get curb-stomped by the gods. I can’t think of a better place to hide out than an alternate timeline where the gods and fae are too busy fighting a civil war to bother with little old me. So, it’s time to head back, settle old scores, clear the alternate timeline Earth of the undead, and plant some new druid groves.

On the streets of Boston, the world is divided into the ordinary Usuals, and the paranormal Unorthodox. And in the Department of Unorthodox Affairs, the Auditors are the magical elite, government-sanctioned witches with spells at their command and all the power and prestige that comes with it. Grimshaw Griswald Grimsby is…not one of those witches.