Major Edward Brent Foster is on his way to a house in the country to stay with his aunt and uncle. So are his fiancée Olympia Peabody, his actress friend Flossie Delamare, and the novelist Juliana Kerr Howe, with whom he has a complicated relationship. To make matters more awkward, the house in question is that of Lady Mary Savylle, the major’s former lover. And as if that weren't enough, the revelation of a secret panel allowing guests’ rooms to communicate has the potential to lead to so...