The Blade of the Spider's Kiss had mortally wounded the demon known as Sinnestra, but the Spider's Bite had not yet proven fatal. Lady Rosa looked to the horizon with fear, knowing that a storm was coming. But it wasn't the weather that had her so deeply concerned. Sinnestra was coming for vengeance.

Still little was truly known about the demoness or what she was capable of. The gnomish wizard Frendlestixx the Great believed that the Great Library Arcanum in the coastal city of Freeport held the key to defeating her.

Bekka and her companions set out to find a way to stop the demoness once and for all. But while they are gone Sinnestra strikes at the heart of Kensington Castle and leaves a trail of blood in her wake...

Sinnestra's Fury ups the notch of danger, proving that Vespia is not a land for the faint of heart.