A large jackknife was evidence in the trial of Soseki Natsume for the stabbing of Olive Green. It was the knife the victim was stabbed with.
A miraculous trajectory[]
- Main article: The Adventure of the Clouded Kokoro
During a marital dispute between Joan Garrideb and her husband John, a candle was knocked over, causing a fire. John opened the window to let the smoke out while Joan started throwing various objects at him. One of those objects was John's favourite book, which sailed out of the window and landed on the road below, where Olive Green and Soseki Natsume were walking by. Joan then threw one of their folding knives, which hit John's pipe, breaking it and chipping off the tip of the knife, which was embedded inside. The knife continued out the window and struck Green while she was reaching down to pick up the book that had just fallen. The fog was light, but it was enough to obscure the knife from Natsume, who only saw Green suddenly collapse with a knife in her back and no one else around.
Green was hospitalized and the knife safely removed to be submitted as evidence in Natsume's trial, with Joan serving as one of the jurors. During the course of the trial, juror number five recounted an incident in which his wages had fallen out of a hole in his pocket, and his wife had thrown a cleaver at him upon finding out. Natsume's lawyer, Ryunosuke Naruhodo, had found out about the Garridebs' dispute during his investigation, and used this juror's anecdote to form his own theory on how the incident had really happened. Joan internally feared that Naruhodo was right, but counted on him being unable to produce evidence, as the knife was just one of many that they owned, and neither Garrideb could remember such exact details of their fight. Nonetheless, Naruhodo found the fragment inside John's pipe and pieced everything together.