Detective Conan S01 E255 The 14th Round of the Matsue Tamatsukuri Linked Verse Contest (1)

"One truth prevails."

Kogoro wins a trip to Matsue from a lottery drawing, and while there they meet and join up with a Linked Verse group, which is a type of poetry. One of their members, a loan dealer, is killed, and Conan finds out that almost everyone has a motive to kill.