After affirming Yorkham's identity through his writing which matches an old letter, Conan notices a man in a trench-coat hiding around the mansion. That night, Hiedy's step mother is found dead in a water well holding a camellia in her right hand; It was the same way Hiedy's biological mother died. The police are called to investigate while Conan attempts to discern who the murderer is. The police find the step mother's car in the forest with the key in the emission and a cassette tape missing. The next day, during the hearing of the will, an arrow is fired from a timed crossbow directed at Yorkham who manages to avoid it.