Perpetrator unknown
Unknown perpetrator stands for:
- No vacations for the good God (original title: Plus de vacances pour le bon dieu ; reference title: perpetrator unknown ), French comedy film by Robert Vernay from 1950
- Unknown perpetrator (1956) (Original title: Lost ), British film by Guy Green
- Perpetrator Unknown (1996) , American film
- Unknown perpetrator (TV series) , GDR crime series from 1972
- Unknown perpetrator - great moments in criminalistics , original title Dobrodruzství kriminalistiky , ČSSR crime series 1989–1993