Just after 9am on October 29, 2004, the body of a young woman was found at the foot of a tower block in Wembley, London.
Her identity remains a mystery to this day, despite various clues left behind.
Investigators know the woman had visited a cafe in the building on the day of her death.
There, she discarded a ‘distinctive’ oil painting which featured two figures and a number of faces, as well as a black carrier bag with the lettering ‘CPNY’.
She also left a used packet of Marlboro cigarettes, a copy of the Guardian and a seven-day bus pass. The latter had been issued at 7.07am on October 26 on Seven Sisters Road.