This episode takes place on November 10, 1997, according to the date on the dental x-ray taken of Juan Mendoza.
Goof - In the original cast bios Lindsay's father was noted as "a notorious Kansas City Police Detective." His character was changed later, as we see in this episode, to a highly respected and well known scientist.
At the beginning, Lindsay Donner did not expect this to be a paranormal case.
Lindsay Donner was reminded of her father Williams Donner when he was trying to freeze dry cholera for the military.