Stupidity: (SPOILERS) Despite knowing that Rowena killed the last person who was blackmailing her, Miles tries to use her secret to blackmail her into sleeping with him. Did he really believe that she wouldn't react with such drastic measures like she did before?
Stupidity: Kale screams for Ronnie after he sees the image of the club girl on the videotape, and Ronnie proceeds to just stand there and doesn't even bother to go up to Kale to see what is wrong. Had Ronnie gone up the stairs to Kale, then there was a likely chance that they could escape from Turner easily.