Mafia 27. The problem of Bovblob residents

…When the mermaids arrived and took Slonysh's remains, they noticed that she was missing one kidney. It's strange; could she have been killed for her kidney? If that's what they wanted, they could have just gone to the store and bought one...
I don't understand what this is all about.

Charlie only has one kidney.

Basically, I suggest that everyone either delve deeper into the clues from these two nights or take a closer look at Kostyan, question him, and decide what to do with him. As I wrote above, the note and drawing suggest that he's an outsider, and that means death and the blue unicorn from the city, or almost all the Mafia and/or the Mask.
And regarding the clues – I think what Gil dug up is a bit far-fetched, but on the other hand, it's the best thing we have so far regarding the first night. After a whole day of discussions, we still haven't achieved anything, so it's not pointless to start analyzing the second night.