Paul Begg is the author of "Jack the Ripper: The Definitive History" (Longman) and two other highly respected books about Jack the Ripper. He is also the author of the widely respected "'Into Thin Air'" (David & Charles) about mysterious disappearances, which included a chapter about the Mary Celeste. He also wrote extensively for 'The Unexplained', a part-work about mysteries to which he contributed a cover article about Mary Celeste and has appeared on a Channel 5 documentary about the discovery of the mystery ship's wreckage.