They Do It with Mirrors Novel by Agatha Christie

In "They Do It with Mirrors" by Agatha Christie, Miss Marple is asked to visit an old friend, Carrie Louise Serrocold, at Stonygates, a rehabilitation home for juvenile delinquents. When Miss Marple arrives, she becomes embroiled in a complex family drama involving Carrie Louise's stepchildren, her husband, and a series of suspicious incidents. As tensions rise and a murder occurs, Miss Marple uses her sharp wit and powers of observation to uncover the truth behind the seemingly baffling events at Stonygates.