If you loved Die Unbekannte, try Eine reine Formalität
Eine Brücke zwischen einem Film, den du schon gesehen hast, und einem, den kaum jemand kennt. Das teilen sie, und was der zweite macht, was der erste nicht macht.
Was sie teilen
Both films are directed by Giuseppe Tornatore, and they both carry the slow burn mood tag, and they sit in Drama / Mystery / Thriller territory. If that's the register that drew you to Die Unbekannte, the second film will land in a comparable space — through a different lens.
What Eine reine Formalität is
Night. Rain slicking the cobblestones. A scream. Famous novelist Onoff, fugitive from fame, brought in for questioning. An isolated police station, somewhere out of time. A long night of interrogation, a dead body, and a truth stranger than fiction. Tornatore's Euro-thriller anticipates the puzzle-box era.

