On 27 June 1918, the Llandovery Castle , a Canadian hospital ship returning to England, was sunk by a German U-boat in contravention of international law. Two hundred and thirty-four crew members died, including fourteen nursing sisters. It was the most significant Canadian naval disaster of the First World War. Anna Stamers, a thirty-year-old nursing sister from Saint John, was on the ship. Now, her story will finally be told. In this well-researched volume, Dianne Kelly explores Stamers’s childhood and nursing education in Saint John; her decision to enlist and her transition to military nursing; her service during the war in field hospitals in both England and France; and her final posting aboard HMHS Llandovery Castle . This vivid reconstruction of Stamers’s life is both an illuminating biography of a young woman’s experience of war and an important examination of the role nursing sisters played during the Great War. Asleep in the Deep is volume 28 of the New Brunswick Military Heritage Series.