ตอนที่ 187: แหวนปืนลึกลับในความมืด

187

Moore is invited to a house as to impress the client's mother who is a finance trader, simply a loaner. Later, loaner is murdered and with the clues, the suspects are her son, daughter, or maid. Conan manages to solve the case and reveals the television was used to create the gunshot noise. (Source: Wikipedia)