Turin, February 5 - An Italian writer accused of murdering a prostitute according to the plot of one of his short stories has written an essay to defend his innocence. In a six-page exculpatory missive to a Turin judge, 35-year-old Daniel Ughetto Piampaschet outlined findings from a year-long investigation into the murder of Nigerian prostitute Anthonia Egbuna that he says prove his innocence. Piampaschet, who was arrested on August 16, is accused of murdering Egbuna, 20, and dumping her body in the Po river in November 2011. Police became suspicious when they found his manuscript for a short story that echoes the circumstances of Egbuna's death. They think that Piampaschet, a regular customer of the young prostitute, became obsessively jealous. His lawyer Stephen Tizzani argues that records show another man also contacted Egbuna frequently, and that an SMS message had been sent from her cell phone as recently as Jan. 2, 2012. Police say mobile phone records show Piampaschet called Egbuna approximately 1,600 times - the last on the day they think she was murdered. The case bears a strong resemblance to the Hollywood movie Basic Instinct, in which actor Sharon Stone's character describes an ice-pick murder in a novel which is then committed in real life, making her the prime suspect. Piampaschet's case is set to resume in November.