The High School Girl Trio's Secret Café (Part Two) Police continue to investigate. Sera figures out the trick used but has not figured out who the culprit is yet. Sera thought Conan hasn't figured out the case, but he informed her that he already figured out the culprit and trick used. What he couldn't figure out is why Ran said this trip is an unusual trip. Sera and Conan worked together to reveal the trick used and the culprit. At the end of the day, the girls informed the frustrated Conan that the trip is their high school trip, which Conan totally forgot. Conan really wanted to go on the school trip.