The Mystery Deepens Over Disappearance of Bristol Man After New Report Dismisses Leading Theory A two and a half year mystery remains unsolved, with new evidence casting doubt on the leading theory surrounding Jack O'Sullivan's disappearance from Bristol.
Despite a series of improbable leads, investigators have failed to find any concrete answers.
The most prominent theory – that Jack fell into the River Avon after walking home from a night out with friends – has been dismissed by Mike Ferguson, a leading expert in missing person investigations who has worked closely with police on the case.