A woman walks into a funeral parlor in London and plans her funeral down to the last detail. Six hours later, she is strangled in her own home. Coincidence? Of course not.
Horowitz inserts himself into the novel because he is the writer that former police detective Daniel Hawthorne chooses to document his work on this case (and I hope future ones as well.) Hawthorne is brilliant, intuitive, abrasive, mysterious, and difficult.
He (fictionally) met Horowitz in his work as a consultant on TV shows written by Horowitz. Hawthorne is fictional, Horowitz is real, and they follow the clues to the surprising solution. I listened to this, and thoroughly enjoyed it, although the solution is a bit of a stretch.