Garet James is the watchtower – the last in a long line of powerful women sworn to protect our world from evil...

She once defeated the malign sorcerer Dr Dee, but her pursuit of the man she loves – the centuries-old vampire Will Hughes – has unleashed another ages-old entity into our time – a being that threatens everything and everyone.

His name is Marduk and he is the descendant of a demonic Babylonian deity. Now abroad in Paris, he has sought out the villainous John Dee and they have hatched a plan together that will create chaos and ensure ruin.

And it will fall to Garet to confront this new threat. Around her she gathers a band of modern-day knights – a brotherhood dedicated to preserving the sanctity of the time-line. But there are others out there who would see Garet fail and who will stop at nothing to bring an end to everything she – and we – hold dear . . .