horror comic, horror film, horror novel, etc noun

A comic (ie strip cartoon), film, novel, etc having gruesome, violent, horrifying, or bloodcurdling themes

horror story noun

1. A story (often true) of one disaster after another
2. Such a sequence of events, a chapter of accidents

horrˈor-stricken or horrˈor-struck adjective

the horrors

1. Extreme depression, frightening thoughts
2. Delirium tremens