Factual error: When Angela is watching the security video on her laptop of her sister committing suicide, you can see she's playing it using Quicktime. She rewinds a couple of seconds by clicking on the first button of the video player. Actually, when you click this button, it takes you to the beginning of the video. The second button would have rewound it a short time.
Factual error: After John traveled to hell using Duck the cat, he and Angela are going to eat something and John tells about his suicide attempt. In this flashback, you see them using a defibrillator to shock him back to life. When he is shocked, people are touching his body, but they don't get shocked.