Blathering insomnia

It was between the hours of midnight and two in the morning when I lay in bed and watched the digital numbers slowly change that I realized I had the wrong puppeteer.
Oh, don't get me wrong, the guy I thought it was would still make a great evil doer, but not for this story. I think I'll let him percolate for book 2.
I don't often get insomnia. I think it was due to some cold medicine that I took. Out cold for two hours, then up for two, and finally four hours of moderate sleep. Yeah, I still feel like crap, but shit happens.
Anyhoo, I started thinking about a Scooby-Doo movie along with an Agatha Christie novel--trust me, there is a common intersection--and I realized that the person responsible for committing the crime was already 'dead'. Not dead dead, though it would work since this is an urban fantasy and vampires do make an appearance, but thought to be dead. It gives the character leeway to create all sorts of havoc, and I like making my characters suffer.
If I feel like crap, then they can, too.