A review by morgandhu
The Compleat Enchanter by L. Sprague de Camp, Fletcher Pratt

3.0

L. Sprague de Camp and Fletcher Pratt collaborated on a series of comic fantasy adventures featuring Harold Shea, psychologist and occasional enchanter. In our universe, Shea works in a psychology institute attached to a hospital, and along with a few of his his colleagues, has developed an interest in what they call paraphysics - the theory that all the worlds of the imagination exist, and the key to moving between them is the ability to shift one's sensory awareness from one universe to another.

In The Roaring Trumpet, the first of Harold Shea's adventures, he plans a nice trip to Ancient Ireland, but instead winds up in the universe of Norse mythology, in the midst of Fimbulwinter, with Ragnarok just around the corner. At first, Shea doesn't realise that the laws of physics he knows don't work in this universe - and neither do his matches, his gun, or anything else he brought with him, but once he works out the basic laws of magic, he gains respect as a warlock, and helps the gods prepare for their final battle. His bewilderment in dealing with the gods, giants, trolls and other magical folk from Norse legend provides much of the comedic enjoyment, and in the end, it's a fun - if somewhat bloodthirsty - romp through a mythic winter wonderland.