Detective Conan S01 E144 The North Star No. 3 Express Leaving Ueno (1)

"One truth prevails."

Conan, Kogoro, and Ran take the overnight North Star Express to Hokkaido to meet a former client. Conan notices that the events is eerily similar to the plot of an unpublished novel written by his father, Yusaku, that had been stolen ten years prior.