Мафия 10. The Experiment.

I didn't notice any real evidence in your message.

The moonlight illuminated the pool, the clear water sparkled, and all around... there was a beautiful silence. The girl is peacefully relaxing in the pool, when suddenly she is attacked and they try to drown her, and to be sure, they also cut her veins!

Look at Lizard's userbar. Don't you see any similarities? How much more real can it get? Do you think such a description came about by chance?

And besides, he was banned that night, he couldn't do anything.

The fact that he was banned is your assumption.
According to him, he didn't leave his room. Anyone could say that. I don't think this is a description of a ban; it's just evidence of Nick312's death.
The lost key, the girls, and so on - these could be clues fabricated by the GM, not a ban on Lizard.
And yes, it's silly to think that all the ND players who were ban-hammering are still alive; half of the players are already dead. Or do you still hope that the mafia will kill each other off?

Kostyan is acting strangely, I agree. And I will vote against him first if I find any evidence