_Nightmare's Disciple_ is a delightful piece of suspense building off the premise that the Cthulhu Mythos is real and its cultists are active here and now. That being the case, how might the creatures of the Mythos manifest themselves in the modern world?
Like with many of Lovecraft's own stories, we are left unsure how much of this nightmare is a product of the characters' own madness and how much is "really" there. Especially striking are the characters who own the horror shop, who gradually come to realize that their hobby is more than just fun and games.
I don't want to say too much more, lest I give any spoilers. Mr. Pulver's novel doesn't perhaps have the *cosmic* feel of Lovecraft's best mythos stories, but it is an admirable (and I think successful) attempt to suggest how near terror may be to what we naively think of as our everyday life.