Diff'rent Strokes· Season 7 · Episode 2
Arnold and Lisa's Mother
Arnold and his pals think they have the solution to contemptible classmate Lisa: they'll doctor her science experiment.
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Guest stars
Shavar Rossas Dudley JohnsonSteven Mondas Robbie Jason
Nikki Swasey Seatonas Lisa Hayes
Emily Yancyas Mrs. HayesRobin LaValleyas Mrs. James