MON$TER$ in movies & all things paranormal are always more popular in October, but such things are of interest to many people throughout the year.
http://io9.com/5953632/this-scary-crumbling-sanatorium-could-be-the-real+life-version-of-the-one-on-american-horror-story
Greystone_Park: http://screencrush.com/oliver-stones-son-made-a-horror-movie ,
www.examiner.com/article/october-16-2012-dvd-and-blu-ray-greystone-park-from-oliver-stone-s-son-sean, www.aintitcool.com/node/59140 , www.dreadcentral.com/reviews/greystone-park-2012 ,
http://horrornews.net/57509/film-review-greystone-park-2012
There are several buildings that are ideal for Movie & TV productions & this is quite a popular location.
www.greystonemansion.org/History/Filming_at_Greystone.html
There is Oakley_Court in the UK.
The_Blair_Witch_Project & the Paranormal_Activity_film_series started out as low budget, but became big time popular. Will the same thing happen for, Haunted_(2012_film)?
Its a very big business that seems to keep on growing.
http://io9.com/5881641/the-scariest-ghost-movies-of-all-time
Hellraiser-3-hell-on-earth
http://the-intersection-point-of-reality.blogspot.ca/2012/10/paranormal-witness.html,
http://the-intersection-point-of-reality.blogspot.ca/2012/11/the-amityville-horror.html
Of course monsters on other worlds have become a steady popular theme over the years.
https://en.wikipedia.org/wiki/Alien_(franchise)#Original_films
H._R._Giger has created various horrifying creatures since the 1970s.