Day 7: 4:00 PM - 5:00 PM - S7-E9
Revealing mistake: When Renee says she couldn't get the laptop to boot up due to a fried hard drive, the Windows desktop is visible on it, which meant that the laptop did boot up.
Day 7: 4:00 PM - 5:00 PM - S7-E9
Other mistake: When Morris drops Chloe off at the FBI, he asks if she's sure she doesn't need his help. In the subtitles, Morris' name is incorrectly displayed as "Miles".
Chosen answer: Nobody knew, not even the writers, until at least halfway through the season when they were writing the end. They wanted to keep all options open.
Nick N.