Chitanda and Houtarou were alone in the club room after school. Chitanda complemented Houtarou for his ability to solve mysteries. He was very modest and said that it had more to do with luck. In order to get Chitanda off his back, Houtarou decided to use another mystery to prove to her that he had been very lucky up to that point. Houtarou used a strange message issued by a teacher directed at unnamed student(s). In the end Houtarou jokingly theorized that the new mystery was related to money counterfeiting.
Episode 19 of Hyouka was very amusing. Chitanda's level of admiration toward Houtarou is so high that she was willing to believe any nonsense that he spouted out. The funniest thing is that the crazy theories Houtarou made up were actually true, despite his best efforts to fail at mystery solving. Another great thing from this episode is that it became clearer that Chitanda is romantically attracted to Houtarou. I really enjoy it when the two get embarrassed when being face to face. This episode gets a 9 out of 10.