The Night Porter - 1974 - 6/10
AKA - Il Portiere di Notte

Ex SS officer Max has been incognito, working in the Vienna hotel.
Until camp victim / lover Lucia stumbles across him.
They renew their “relationship”, best described as toxic and obsessive.
Less taboo today (especially as nations nudge toward fascism again) this still provokes.
The SS imagery, the dangers to themselves and other hiding Nazis, songs, attire.
Tone gradually gets saturated in claustrophobia and paranoia.
Enjoyment / appreciation might hinge on how ruinous were your sexual relationships.