The party for her retirement as the night sister of a thousand-bedded hospital a great success. But now Harriet, without the purposeful life and companionship of the hospital, finds herself bereft and lonely. Memories of her childhood spent in the Lake District and her love of nature spur an impulsive decision to book a nature cruise to Australia. On board, Harriet is confronted with events from her tragic past. As the strands begin to untangle,...