4 Season
95 Episode
Welcome Back, Kotter - Season 4 Episode 20 Oo, Oo, I Do (1)
Arnold's relationship with Mary gets serious. Then he finds out he has to move and leave the school. Upset, Arnold decides to propose marriage to Mary. She accepts.
- Year: 1979
- Country: United States of America
- Genre: Comedy, Family
- Studio: ABC
- Keyword:
- Director: Alan Sacks, Gabe Kaplan
- Cast: Gabe Kaplan, John Travolta, John Sylvester White, Ron Palillo, Robert Hegyes, Lawrence Hilton-Jacobs