Saltburn
I have so many things to say about Saltburn, however, I can't say all of it so l'll say few things.
Oliver is social climber, when the movie started—he lay his eyes on Felix and ever since. Making his bike break down and offering help, then getting invited and making himself look poor and from a sorrow background. Felix should've told at least one person, in my opinion—Felix isn't exactly good either, it felt like he used Oliver as a shoe placement. Savior complex so he could feel good about himself.
Farleigh saw through Oliver because Ferleigh is social climber also. The only reason why he failed, is him telling Oliver at the party how he always comes back to Saltburn, in which Oliver frame him for overdosing Felix.
Venetian seem like she observant most things, but forgot to observant Oliver. It seem like she never questioned what happened, why Oliver was there or what's his purpose.
The parents being blind to Oliver tricks due to his sob story. Like pity.