He lost his mother in an accident ten years ago.
The police ruled it an accident.
He didn't believe it.
A case has been unsolved for ten years.
I thought it would end there, but an accident happened and implicated a case from ten years ago.
My childhood friend died without knowing it.
People you once thought you knew have become strangers.
Did everything come to an end in the blazing mansion?
(The above is purely nonsense, please don't believe it)