What a creep fest! This film is fantastic.
The idea of having a manservant, like the main character does, is frightful in itself- I certainly wouldn't want anyone lurking around picking up after me & every movement I made. Shiver!
So, when this particular hired helped (played to perfection by Dirk Bogarde), brings his sex kitten 'sister', into the household, & the sinister sex & drinking begins- watch out!
It's enthralling to watch, & brings up thoughful (albiet dark) ideas about class, & friendship & working relations- a definite thriller & one of the best I've seen.