After reading these reports, I asked Beatrice, "How did you get such comprehensive information?"

Beatrice pondered for a long time before saying, "On the second day of my mother's death, when I went to the funeral home to arrange my mother's body in the morgue, a man suddenly appeared in front of me.

“He handed me a USB drive, saying, 'If you want to know how your grandfather died, take a look at this! The Keller family suffered, and you are the only one who can seek revenge! Keep it safe, or