Patricia Wentworth 
She Came Back [EPUB ebook] 

Anne Jocelyn was beautiful, wealthy, charming and spoilt to the core. She was also killed on a beach in Brittany early in the war. Her estranged husband inherited her money and, three years later, is planning marriage once again. So when Anne arrives at the family home unannounced, having at last escaped Nazi-occupied France, it is a terrible shock. It is even more shocking when a woman close to her is found murdered…