Meitantei Conan OVA 04: Conan to Kid to Crystal Mother

Kaito and Aoko travel by train with Aoko’s father, Inspector Nakamori, in an attempt to prevent the thief Kaitou KID from stealing a valuable gem called the Crystal Mother. Unbeknownst to Aoko and Inspector Nakamori, Kaito himself is Kaitou KID and will do whatever it takes to recover the gem. Meanwhile, Conan and a young boy named Philip are tailing Kaito, determined to stop him at all costs.