The Funhouse - Dean R. Koontz
The one good book I've read by Koontz - the one that got me to read deeper into this author's sick mind.

A great, genuinely creepy read with an ending that the man had managed to write that wasn't, well, shit. His strong point - writing scenery - is used for great effect in this story, making a powerful story that its difficult to put down. The scenes in the carnival are especially arresting and memorable.