The X's

To Err is Truman/No More Mrs. Nice X (1x6)

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Truman attempts to be good and refrain from pulling pranks for one entire day, so that he will be allowed to join his family at the "world's greatest" amusement park. Mrs. X is filled with peace and tranquility after she returns from a retreat, but unfortunately these qualities prove useless when confronting Glowface.