Or, the alternate titles, "How I Killed Your Mom", or, "I'm a Big Selfish Asshole Who Got Away With Murder".
This to me is the most abhorrent thing for someone to do (even worse than K-Fed blackmailing Britney with a sex tape). If I'd written the book, it would be in poor taste, but the guy who everyone thinks did it anyways, and whose own children's mother is the victim who he is going to describe murdering makes it so much worse. Having said that, if I were going to write an account of "If I'd Murdered Nicole Brown and Ronald Goldman" it'd go a lttle something like this -
Paul (on the phone) - "Hello, is there an OJ Simpson there please?"
OJ - "Yes, this is OJ"
Paul - "Hey OJ, if I give you 50 bucks, will you murder your ex-wife and her friend?"
OJ - "Yeah, sure. I was thinking about doing it anyways."
Paul - "Cool, thanks."
I'm not sure there's enough there for an entire book though, but I think I could expand it a little and maybe throw in some pictures.