" Mord auf dem Landgut " (An English Murder) by Cyril Hare is a classic 1951 "Golden Age" whodunit set at a snowy country estate, following a series of murders among a mismatched group during the Christmas season. The story focuses on the decline of the British aristocracy and features a complex puzzle that relies on unique legal and political nuances. The mystery is highly regarded for its "closed circle" atmosphere, often compared to Agatha Christie and Dorothy L. Sayers. You can find the book at Goodreads or Bastei Lübbe . Mord auf dem Landgut by Cyril Hare | Goodreads