Sue Ellen's Lost Diary is the first part of the fourteenth episode of Arthur season 2.  Sue Ellen's Lost Diary aired on February 16, 1998.  It aired with the episode "Arthur's Knee".


Sue Ellen loses her diary in the library. Muffy, Francine, Binky, and Arthur find it, and are thinking that it contains her opinions about them and whether to open it or return it unread.


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