There are worlds bathed in the light of the Heart of Magic, worlds fully eclipsed from its light, and then there are those that exist in the shadows between the light of magic and the darkness of the mundane.
Earth is one such shadow world.
Rob Brist is-or at least may become-a Shadow Mage, one who can reach into the shadow and access the power of the light beyond. But magic has a price, and Rob soon discovers that the power of a Shadow Mage carries an inherent potential for evil: the enslavement of a familiar, a being from the light who becomes the source of power for a Shadow Mage.
To preserve the delicate balance between the worlds of light, darkness, and shadow, Rob must travel through time to undo a wrong-a wrong that has been, and will be, committed countless times throughout the multitude of time and space.
An ancient evil threatens every denizen of the light. Worse, it threatens magic itself-and with it, the future of mankind.