The brigantine Mary Celeste was found abandoned and deserted, under sail, near the Azores, by the brigantine Dei Gratia, on 4 December 1872. And from that discovery, ‘the greatest mystery of the sea’ was born. Why had the vessel been abandoned by her crew, including the captain’s wife and young daughter, when she was apparently seaworthy and in good order? The Mary Celeste mystery soon inspired a pick-and-mix assortment of conjecture, supposition and ‘fake news’ for the desertion of the derelict. This new study commemorating the 150th anniversary of the incident, presents the facts, news reports, ‘fake news,’ and legacy of mystique and myth about a mystery that has often claimed to have been solved but which has remained an enduring enigma for so many years.