I'm stuck with the evidence for the murder of Ami and nothing is leading me to the answer. I tried looking around, but that didn't work at all.
Viewing post in Corrupted Kingdoms (NSFW 18+) comments
What does your lead say? You're probably at the part where you need to confront the staff with the testimony evidence you've gathered. Sometimes confronting a particular person with particular evidence will unlock a new piece of testimony which you can then confront someone else with.
Read the evidence carefully, and look for inconsistencies :)