***The following is review/breakdown followed by a detailed recap of episode 308 of FROM, “Thresholds,” and it contains spoilers for the episode.*** 
Episode 3.08, “Thresholds,” is in my opinion, one of the best of the season so far, on par with the premiere episode. We get major developments heading into the last two episodes of season three.
The main thread of the story is what Ellis and Boyd should do with Fatima. Boyd wants to cover it up, which I think is a mistake. I appreciate that Boyd wants to protect his family, but he’s not thinking about the safety of the town, which includes his son, nor the ramifications of what could happen. Donna is 100% right. It’s one thing to live in the town and hide from the creatures, but people won’t be okay with an unknown murderer among them. It would ultimately be a witch hunt for Sara, who in this case is innocent. However, even if somehow he could convince the people that Sara is innocent, which isn’t likely, people would be scared because they wouldn't know who to trust. It would breed fear, and people would start defending themselves and eventually going on the offense, feeling threatened. They could end up hurting or killing each other, because they can't trust each other. I think the best way forward would have either been to find a way to convince people it was an accident, or perhaps make it look like Tilly tried to leave at night, and they would assume she was killed. The other solution, which no one wants to see, would be to make it look like the creatures killed her, but I would worry they might retaliate. In the end, some version of the truth was probably, in my opinion, the best option. I also do not believe that Acosta will just let it go, unless they somehow brought her in on what was going on. Regardless, I do think Boyd should have listened more to what Donna said. Boyd is becoming less of a good leader, whereas Donna would make a better one, because she thinks of the town first.