I Know Who Did It (A Jack Nightingale Short Story). Jack Nightingale Short Stories, #4

Jack Nightingale was always happier dealing with criminal cases or even divorce than he was with matters of the supernatural. So when a client came with a simple request to uncover the meaning behind her father's last words, he was happy enough to take the case. Little did he know that the investigation would lead him to one of the vilest demons to ever walk through the gates of Hell. I Know Who Did It is about 14, 000 words, perfect if you have an hour to spare.
Stephen Leather is one of the UK's most successful thriller writers, an ebook and Sunday Times bestseller and author of the critically acclaimed Dan "Spider' Shepherd series and the Jack Nightingale supernatural detective novels. Before becoming a novelist he was a journalist for more than ten years on newspapers such as The Times, the Daily Mirror, the Glasgow Herald, the Daily Mail and the South China Morning Post in Hong Kong.
He is one of the country's most successful ebook authors. He has sold more than a million eBooks and was voted by The Bookseller magazine as one of the 100 most influential people in the UK publishing world. His bestsellers have been translated into fifteen languages. He has also written for television shows such as London's Burning, The Knock and the BBC's Murder in Mind series and two of his books, The Stretch and The Bombmaker, were filmed for TV.