27 books • 6 series
Book #1: The Midnight Sea
Book #2: Blood of the Prophet
Book #3: Queen of Chaos
Book #2: Rogue & Revenant
Book #1: Nocturne
Book #2: Solis
Book #3: Monstrum
Book #4: Nemesis
Book #5: Inferno
Book #1: The Daemoniac
Book #2: The Thirteenth Gate
Book #3: A Bad Breed
Book #4: The Necromancer's Bride
Book #5: Dead Ringer
Book #1: Una fiera di spettri
Book #3: Devil of the North
Book #3: City of Keys