The Pale Blue Eye, by Louis Bayard

Bayard takes recognizable figures from literary history, both fictional and real and explores them through complex mysteries. I read his Mr. Timothy a while back, in which Dickens' A Christmas Carol gets the treatment, featuring Tiny Tim as the protagonist, and reluctant investigator. In The Pale Blue Eye, Edgar Allen Poe's time at West Point is the focus. He is brought in to assist a retired investigator in a series of ghastly murders.

The fun of these stories is all the references to the original works, or in this case, author. The mysteries themselves are a little heavy and convoluted, and if they stood alone, would probably not succeed nearly as well. With the literary allusions and whatnot, they're fun, but might be a little mystifying if you're not familiar with the source material.