Multiple realities
(covers information from several alternate timelines)
(covers information from several alternate timelines)
A horror story was a scary tale.
In 2268, Doctor Leonard McCoy believed that Scotty's report of having seen the missing James T. Kirk appear and disappear sounded like a horror story. (TOS: "The Tholian Web")
In an alternate 2390, Harry Kim claimed he had told Tessa Omond a few horror stories about The Doctor which had caused Omond to regard the EMH as "infamous". (VOY: "Timeless")