Damn, I played both days last night.
Anyhow, regarding Day 4:
Spoiler:It was very frustrating for me. Almost straight dialogue, the kind that has 3 choices, and those have 3 choices and so on. Basically you need to try all the options to get a new choice. I had to go through everything multiple times until I found a way out. Besides that, they are all leading statements. At the end it had me believing that Trilby did kill AJ, when I had thought differently. By the end, I didn't know what to think. Perhaps that was the point?