Out of the Blue by Charlotte Bingham
Florence Fontaine has still not recovered from a family tragedy when she discovers a strangely dressed young man asleep in her guest cottage at the Old Rectory. Against her better judgment she offers him breakfast, only to rue the day as she finds herself caught up in the resulting drama of his life. Florence's young and beautiful daughter, Amadea, is immediately suspicious of Edmund, as he appears to be called, fearing that he might be a fraud. Against everyone's advice, Florence enlists friends and neighbors to help restore Edmund's now wandering mind and discover who he might be. As the mystery unfolds, it becomes apparent that Edmund's history is entwined with that of nearby Harlington Hall, but that his real identity is something quite other. Florence and Amadea become united in their quest, an adventure that takes them into many pasts, not least that of the young man whom they are now dedicated to help. In doing so they are finally able to put the tragedies of the past behind them, repair their once disjointed lives, and embrace a new and happy future.