She Came Back - Miss Silver #9.
She Came Back first published in 1945.
Assumed dead, Lady Anne Jocelyn meets varying degrees of welcome when she returns from Occupied France to her old life in England. Though her husband Sir Philip is not overjoyed to see her, he agrees to a trial reunion. But a murder raises his doubts, and then a second and third send Miss Silver to a curious consideration of life after death.
Patricia Wentworth - born Dora Amy Elles - a British crime fiction writer.
She wrote a series of 32 classic-style whodunnits featuring Miss Silver. The first of which published in 1928, and the last in 1961, the year of her death.
Miss Silver, a retired governess-turned private detective, sometimes compared to Jane Marple, the elderly detective created by Agatha Christie. She works closely with Scotland Yard, especially Inspector Frank Abbott and is fond of quoting the poet Tennyson.
Miss Silver well known in the better circles of society, and she finds entree to the troubled households of the upper classes with little difficulty. In most of Miss Silver's cases there is a young couple whose romance seems ill fated because of the murder to be solved, but in Miss Silver's competent hands the case is solved, the young couple are exonerated, and all is right in this very traditional world.
Wentworth also wrote 34 books outside of that series. Her novels were the topic of Jariel D. O'Neil's 1988 doctoral dissertation.