Underjordens hemlighet
- Jier: 1991
- Lân: Sweden
- Sjenre: Family, Comedy, Drama
- Studio: Sandrews, FilmTeknik, Cinetofon, Svenska Filminstitutet, SVT
- Keyword: hospital setting
- Direkteur: Clas Lindberg
- Cast: Max Vitali, Oliver Loftéen, Gösta Ekman, Kristina Törnqvist, Gunnel Fred, Hans Wigren
