"Aspiring screenwriter Rey Rivera was just 32 years old when he disappeared on May 16, 2006. About a week later, he was found dead under strange circumstances at Baltimore's historic Belvedere Hotel — and the mystery remains unsolved to this day."

Sources:

Unsolved Mysteries Theory: Who Called Rey Rivera (& Why)" . Screen Rant. August 15, 2020.

2006 Death Of Rey Rivera In Baltimore Featured In Netflix's Unsolved Mysteries Reboot. July 1, 2020.
Retrieved December 27, 2022.

https://allthatsinteresting.com/rey-rivera-death