The uncropped version of a photo of Prince Andrew standing beside a teenager who claims she was forced to have sex with him features a mystery thumb in the bottom right corner.
The person who took the snap of the Duke of York, with his arm wrapped around the waist of Virginia Giuffre while now-convicted sex trafficker Ghislaine Maxwell smiles behind them, has remained a mystery for 20 years.
The image is reported to have been taken in March 2001 in Maxwell's London home, and Prince Andrew claims that he does not remember it being taken or that he met Ms Giuffre, who was aged 17 at the time, that evening, as reported by The Mirror.