Plain Clothes
- Tahun: 1988
- Negara: United States of America
- Genre: Comedy, Thriller, Mystery, Crime, Romance, Action
- Studio: Sierra Alta Productions, Paramount Pictures
- Kata kunci: high school, murder, undercover cop, teacher student relationship, woman director
- Pengarah: Martha Coolidge
- Pelakon: Arliss Howard, Suzy Amis, George Wendt, Diane Ladd, Seymour Cassel, Larry Pine