'Birthright of the North' is the first module based in the world of the Bloodknight trilogy, an upcoming series of novels by B G P Hughes. With such literary and creative impetus behind it, you would expect this module to be a work of some substance. It doesn't disappoint. In fact, it has the distinction of taking up more of this reviewer's time than any before it. The reasons for this become clear a very short way into the adventure; a huge, detailed play area beckons, and the player's freedom to traverse it is limited only by his ability to overcome the obstacles set before him.