Meitantei Conan › Season 1

Chapter 26 — Pet Dog John Murder Case

Conan is coming back from a restaurant with Ran and Kogoro when they hear a man scream from a nearby house. Once inside, they learn from Sugita Sanae that Maehara Takeshi has been killed in an unprovoked attack by a dog named John. Sakaguchi Masayoshi, John's owner, falls under suspicion as it is believed he trained him to murder. It is revealed that Takeshi bullied Sakaguchi Masato, Masayoshi's son, who committed suicide several years ago as a result of it. Inspector Megure informs everyone that John is in danger of being put down. Sanae explains that Masayoshi called a couple minutes before 9:00 to talk to John and Takashi put the phone to John's ear. Conan drops hints for Kogoro, allowing him to solve the crime. Kogoro concludes that John was trained to kill when he hears nine chimes from a Longcase clock and Masayoshi's voice. Masayoshi confesses that he had forgiven Takashi for Masato's death at the funeral, however, several years later, Takashi resorted to being a heartless bully again and Masayoshi devised a plan to murder him. John is spared and placed with one of Masayoshi's relatives in the country. (Source: Wikipedia)