Chitanda invited Houtarou to a shrine on New Year's Day. At the shrine they met with Mayaka, who was working as a shrine maiden. On their way to running an errand, Chitanda and Houtarou accidentally went into a shed and were locked in. Both were freezing, but in the end managed to get Satoshi's attention. Satoshi went to the shed and unlocked Chitanda and Houtarou.
Episode 20 of Hyouka was another cool one. I was very happy to see Mayaka and Satoshi again. The awkward interactions between Chitanda and Houtarou continue to be amusing. When they were locked in the shed I thought they were going to hug each other to fight off the cold. That did not happen, but Chitanda was close to getting naked when Houtarou was looking for a string (removing the string on Chitanda's kimono would have undone it). This episode gets a 8 out of 10.