Other mistake: Penny comes into Karen's room to check on her, and Karen is surprised to see her there. So Penny obviously let herself in somehow, but we see in the next scene that the alarm is on, and Penny does not know the code. If she does not know the code, there's no way she could have got into the house without Karen knowing. Even if Penny had a key to Karen's place, she would have set off the alarm.
jshy7979
16th Nov 2024