3) In the morning, Charlie is killed by a female doctor. The clues are Vershinin A and the Sharpshooter from the Dark Tower. Here's what I found:
"Alexey Vershinin is the most accurate shooter in the government.
This was determined at the shooting competition, which took place as part of the Spartakiad for civil servants. Eight teams competed in accuracy. They shot from a "Viking" pistol from a standing position.
But we don't really have anyone who fits the "Viking" profile, right?
Guys, who watched the series "Vikings"?
Tell me how important this character is:
https://vikings.fandom.com/ru/wiki/Вильгельм
If this isn't just an episodic role, then maybe:
Vershinin A + Sharpshooter = news about a shooter -> Viking pistol -> Vikings series -> Wilhelm