After rushing from his home, Rey Rivera disappears. Days later, his car is found — and a strange sight at a historic hotel triggers a baffling mystery.

Alonzo Brooks vanishes after a party. His body is found a month later. Many believe that his unsolved death is a hate crime.

Residents of Berkshire County, Massachusetts, recall their baffling, terrifying experiences with a UFO on the night of September 1, 1969.