I got to say I was a bit disappointed by Mr. Mercedes.

I mean it was very good (as anything by King is likely to be) but he gave way too much about the villain away too soon. He was piteous. He should have went the route of making the villain more psychologically durable and scarier - more Max Cady-ish. In fact, seeing as it would have fit the character more, the Columbine killers wouldn't have been a bad place to start when trying to mold the character.

Some of the procedural was a bit contrived too and I wasn't buying some of the supporting characters the black neighbor kid (Jerome) and the two main female characters.

The ending was also a bit of an anti-climax.

All being said I can't wait for the sequel - Finders Keepers.