Book 2.5 of the Federal Witch series.Catherine Moore, Cat to her friends, trained with her friend Agatha Blackmore to be the best FBI Agents to ever graduate from the Academy. When Agatha left for her Probi assignment Cat had one of her own. A serial killer stalked the South. Sometimes it takes a Monster to catch a Monster. The work fills in some of the nooks and crannies found between Magical Probi and Special Agent in Charge.