I thought we might like to read some spooky fics, so I made a list.
There’s a story in which Bodie is driving and ends up skidding off the road because he could swear he’s seen come kind of animal cross in front of him—and then Doyle is injured in the crash—the only shelter nearby is an old abandoned cottage with a few sticks of furniture which Bodie uses to build a fire…. I don’t remember the author or title.  But here are some others:
Legacy of Temptation by Ellis Ward
http://www.thecircuitarchive.com/tca/archive/17/legacyof.htmlMonster—AU--Doyle’s father’s deal with Gressil, a demon;  Bodie works with computers and Doyle writes gay romances
The Temple of Venus by Lizzie
http://www.thecircuitarchive.com/tca/archive/9/thetemple.htmlGhost (Bodie’s grandfather meets Doyle and they have sex;  then Doyle meets Bodie, the grandson, who looks just like his grandfather and is very confused by Doyle’s recognition)
Legacy by Mab Browne
https://archiveofourown.org/works/8233Curse—the Bodies have a family curse, a demon who wants to control everything and destroy any comfort the current Bodie has.
Mine—I kept trying to write horror, but I don’t think I managed anything too horrible
(as jat_sapphire)
The Dirty Computer series (3 stories)
https://archiveofourown.org/series/1159412Someone has taken over CI5 and changed everything for the lads
The Bloody Child (much described gore)
https://archiveofourown.org/works/42093639Non-human criminal