Welcome Back, Kotter - Full Series Information, Trailer & IMDb Reviews
Watch Welcome Back, Kotter Season 4 Episode 21 online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.
Welcome Back, Kotter: Arnold gets upset when the other Sweathogs tease him about not being able to provide for Mary, and he vanishes. Mary finds him and convinces him not to worry, and the two get married.