New situation puzzles

The German police was totally confused. Over the course of 15 years, the same person had been stealing, killing, and driving away. By 2008, they had spent 14 thousand working hours and over 15 million euros to find the criminal but failed. How did it happen? This is a true story.

A man is returning from Switzerland by train. If he had been in a non-smoking car he would have died.

A man is found hanging in an otherwise empty locked room with a puddle of water under his feet.

A man stole a wallet. This caused his death. What happened?

Silence fell, and after a few moments she died.

He was very calm. However, they kept beating him until he screamed. After that, she was happy. Why?

Kirill is jailed for a murder he hasn’t committed. Bill can prove that it wasn’t Kirill. But he deliberately hides the evidence. Why?

Three dead men sitting at a table in a room. On the table, there are playing cards and a gun. What happened?

Mike has been standing on his knee in the middle of the desert for over a day. He is all alone and has neither food nor water. But he doesn’t leave the place. What’s the matter?

Beulah died in the Appalachians, while Craig died at sea. Everyone was much happier with Craig's death. How come?

A car without a driver moves; a man dies. How come?

A dying man gives another man a gift, and then the dying man dies. Shortly after that the second man dies. How come?