Underjordens hemlighet
- Tahun: 1991
- Negara: Sweden
- Genre: Family, Comedy, Drama
- Studio: Sandrews, FilmTeknik, Cinetofon, Svenska Filminstitutet, SVT
- Kata kunci: hospital setting
- Pengarah: Clas Lindberg
- Pelakon: Max Vitali, Oliver Loftéen, Gösta Ekman, Kristina Törnqvist, Gunnel Fred, Hans Wigren
