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4/4 When a government minister dies, Edgar Wallace's detective sets out to uncover the truth.
3/4 The 1920s detective tackles a jewellery heist of emeralds and hounds a notorious villain.
2/4 The detective tackles a jewellery fraud with a link to a transatlantic visitor to London.
1/4 Tackling a strange London bank robbery, Edgar Wallace's sleuth thinks like a criminal.