One wet and chilly November afternoon in 1947 a woman stands at the edge of a lake forced into a heartbreaking choice between her past and her future. In 2008 Police diver Martha makes an incredible discovery -- a package containing a series of lost mementoes which reveal a story of intrigue, betrayal and heartbreak. As the threads of the past and present are drawn together, Martha's world, and that of her family, is changed for ever.