On the 5th of December 1872, the American-registered brigantine, the Mary Celeste, was found drifting in the Atlantic. The ship was in good condition. Its cargo was intact. However the 10 people on board were missing without trace. An official inquiry in Gibraltar failed to find the cause of their disappearance and since then, rumour, wild speculation and many theories have been proposed. In the 135 years that have passed, the mystery of this "ghost ship" has never been solved - until now. This is not another re-telling of this famous story or another theory which cannot be proved. A four-year investigation for this programme has turned up new information including a transcript of the ship's lost log. Now, vital new clues have enabled an international team of experts to finally solve what is widely regarded as the greatest mystery of the sea.