The File of Young Kindaichi Returns Season 1 Episode 11

The Gokumon Prep School study retreat begins and the conditions are even harsher than Kindaichi was expecting! Not only that, he and Miyuki are put in a separate group, although they both hear hints of a group of six students who did something unforgivable in the past and now fear deadly retribution. Whose strings are the Puppeteer from Hell pulling and what is he going to make them do?!