A Nice Place to Visit - S1-E28
Revealing mistake: When Valentine tries to shoot Pip, he shoots the lamp to see if his gun works. The lamp breaks a full second after he shoots it. It was obviously done by special effects.
A Nice Place to Visit - S1-E28
Revealing mistake: When Rocky evicts three women from the room and slams the door behind them, you can quite clearly see the entire wall shaking.
A Nice Place to Visit - S1-E28
Revealing mistake: After Valentine finds out he isn't in Heaven, he tries frantically to open the door. As he does, you can see the whole wall and door frame moving along with the door, showing that it's fake.
Answer: #4: That he did personally murder at least 14 (Jews). The last word I couldn't quite hear because of the screams, but I hear an "-oz" sound at the end, so it's an educated guess. #5: That he did sign and put into effect specific orders calling for the gassing and cremating of one million human beings.
Bishop73