Book excerpt: There's a fine line between fact and fiction...Following the publication of his latest crime novel, Barclay Curle receives a letter from a woman accusing him of writing about the murders she has committed. Is it just the wild ramblings of a crazed fan, or could there really be a violent murderess out there? The discovery of a body killed by the favoured method of Curle's fictional killer seems to suggest there may be some truth to the letter...But for Detective Inspector Jim Meldrum, Curle seems the obvious suspect. Faced with a second murder and a darkening cloud of suspicion, Curle decides the time has come to take action. After all, he asks himself, who has more experience of solving murder mysteries than a crime novelist?