So I was pondering peculiar story premises, and I unearthed a strange idea. What if, for one reason or another, a detective murdered someone. (Not sure who or why yet.) He works in the police business, so he knows how to cover his tracks pretty well. After a couple of months with no suspicions or anything more than a missing person on the agenda, he thinks he got away with it. Many people have been trying to track down the killer but have failed, which is good for him. His own job isn't going too well though, and if he comes up short with another case, his position as a detective is definitely lost. This is the point at which he is assigned to his own case. Dilemma! It was a strange thought, but I have a feeling there is a thrilling or comically amusing potential in it. Which is why I'm asking the brilliant minds of yours to help discuss the possibilities of this premise. I know it's quite simple and open ended and holes in the idea are inevitably going to be found, but I've got a hunch about this one. I feel like it could be made into something great. I don't know, I could just be a loony who thinks he's got an amazing idea but it turns out stupid. I hope to god this hasn't been done in a really obvious book or film.