The Files of Young Kindaichi: Murder on the Magic Express(2001)

When the head of the touring magician's group "Magical Fantasy" is murdered on a train while on his way to Hokkaido, young Kindaichi, who also just happens to be on board, is fast on the case to find the culprit. But just as quickly as the case unfolds, the body disappears only to be rediscovered again, along with other new bodies.