博斯科姆比溪谷案 The Boscombe Valley Mystery (1968)认领

　　The dead body of grumpy Bill McCarthy is found, brained with a rock, and his son James, with whom he did not get on, is arrested. James' girl-friend approaches Holmes, who discovers that Bill's dying words were nothing to do with "a rat" but concerned with the days of the Australian Gold Rush, decades earlier