After flunking out of the Auditor training program and being dismissed as “not Department material,” Grimsby tried to resign himself to life as a mediocre witch. But he can’t help hoping he’ll somehow, someway, get another chance to prove his skill. That opportunity comes with a price when his former mentor, aka the most dangerous witch alive, is murdered down the street from where he works, and Grimsby is the Auditors’ number one suspect.
Proving his innocence will require more than a little legwork, and after forming a strange alliance with the retired legend known as the Huntsman and a mysterious being from Elsewhere, Grimsby is abruptly thrown into a life of adventure, whether he wants it or not. Now all he has to do is find the real killer, avoid the Auditors on his trail, and most importantly, stay alive.