Almost from the moment the Cunard liner Lusitania was sunk by a German submarine in May 1915, controversy has surrounded her. Why did she sink so quickly? Had the liner been carrying munitions for the British? Did Winston Churchill allow the sinking in the hope that it might draw America into the war? Rumours of conspiracies and cover-ups still surround the liner. In 1993 Robert Ballard led an expedition to the wreck of the Lusitania off the coast of Ireland in search of the answers. Ballard's conclusions are authoritative and provide a fascinating, definitive account of what happened.