The New York Daily News reports three months ago an Oregon chef was fatally shot. His wife, who 6 years ago wrote an essay entitled "How to Murder Your Husband" as well as several romance novels, was just arrested for ... wait for it ... killing him.
The thought, many have realized, becomes the parent of the deed. We know she imagined killing him in order to write about it and it appears the police believe she eventually saw it as a realistic act.
She didn't imagine the "deflecting suspicion" part nearly so well, it seems. Perhaps forensic science has progressed since she researched the essay. Or conceivably she had nothing to do with it.
If you made this story up, nobody would believe it.