Continuity mistake: Mr. Robinson pours Benjamin a scotch and puts the large black liquor bottle back down facing outward the same way as the other one. As Mr. Robinson hands him his drink Benjamin says, "thank you, thank you very much" and if you look closely at the label the black bottle of scotch has been rotated 90 degrees to the left and is no longer facing them. (00:18:00)????
Continuity mistake: Mr. Robinson leaves Benjamin's apartment and calls him filth and scum as Mr. McCleery the landlord sits at the top of the steps listening. The painting on the wall to the left of the steps is not in direct light but in the next shot when Benjamin walks by the lighting has changed and a dark shadow cast by the frame against the wall is visible. (01:32:50)????
Continuity mistake: Benjamin and Mrs. Robinson have a rendezvous and while they're in bed in the dark he tries to get her to talk about her life and her husband. If you look closely after she turns the light back on the drapes on the window behind the lamp in the rear of the room have been rearranged without anyone going near them. This happens a couple of times throughout the scene. (00:48:00)????
Continuity mistake: Benjamin and Mrs. Robinson have a rendezvous and while they're in bed he tries to get her to talk about her life and her husband. If you look closely at the top of the nightstand to her right there's only a pack of cigarettes and the switch to turn off the lamp. They speak in the dark for a few seconds that she turns the light back on and the nightstand is full of all sorts of other stuff that wasn't there before. (00:46:15)????
Continuity mistake: Benjamin brings up Mrs. Robinson's purse who says, "Put it in Elaine's room, where we were". He proceeds to put it next to a vase on the first shelf to the right of her picture. We've seen this shelf a few seconds before and all that was there was a cup and a pink basket that are now gone. (00:16:00)????