“The Mystery of the Pin” is a detective novel by the outstanding British writer and playwright Edgar Wallace (1875–1932). Millionaire miser Jess Transmere is found dead in his home. The investigation leads to a Chinese restaurant, to the actress Ursula Erdfern, in whose company the millionaire was often seen. Edgar Wallace is a popular detective author, novelist, screenwriter, and founder of the “thriller” genre. Edgar Wallace Richard Horatio is the author of many works: “Green Shooter”, “ Face in the Dark”, “At the Three Oaks”, “Avenger”, “Joker”, “Feathered Snake”, “Gate of Treason”, “Counterfeiter”, “Bandit”, “Düsseldorf Murderer” and others.