I'm currently trying to systematically organize all the evidence and who it relates to, using a notebook and pencil, and then put it all together for the two nights. Afterwards, if I have time, I'll publish the most obvious candidates. For now, I'll just write about Plesen.
For the first night, the evidence against him is the cloak (or rather, one piece of evidence, as I think, maybe it's additional). The cloak is more significant than the dirt because it was directly on the killer.
For the second night, the evidence is "fade" or "sudden attack." I'll explain: the event was shocking, meaning unexpected. Therefore, the attack on the TV studio was unexpected (or, in this case, sudden).
Then, the Mafia could have used the statement, which connects to Plesen as "Wraaаааай, you stupid kids, haven't you died yet?!" - i.e., with the same dismissive meaning.
I published this version because it's complete, even though I don't fully like it. Nevertheless, if we also take into account Plesen's strong desire to hang me, then it's quite possible that this is how it all happened.
Well, I don't know, I believe in Zubrik... ^^

Барон "Vampires"
Отдай свои прошлые сны,
В сомненьях себя обрети,
В бешеном танце душа кружится!
Не думай, что будет потом,
Здесь и сейчас мы живем,
Стань хоть на миг сам собой, слышишь!