Fat Albert and the Cosby Kids (1972)
0 plot holes in season 4
Starring: Bill Cosby, Lou Scheimer, Erika Scheimer, Gerald Edwards
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Continuity mistake: Just after Otis makes the ghost sounds from inside the house, it shows the gang standing together outside the house. Otis is with them outside, which is impossible, as he is inside the house pretending to be the ghost.