The Bureau of Preternatural Investigations returns in Switchback, the sequel to Melissa F. Olson's Nightshades.Three weeks after the events of Nightshades, things are finally beginning to settle for t
Melissa F. Olson's thrilling FBI vampire procedural Nightshades series concludes with OutbreakThe Chicago field office of the Bureau of Preternatural Investigation is facing its deadliest challenge, y
