A top tier example of golden age classic crime! This is a murder mystery but it's also a romantic adventure, and a Gothic fantasy, with elements of noir and even human philosophy. The plot is ridiculous, but it sweeps you up and carries you along because the characters are so well realised and the atmosphere is so pervasive. There's a real sense of unease and threat, which lingers even after it's all been resolved. Brilliant fun! ⭐⭐⭐⭐⭐