GN Gothic fiction is AP atmospheric, AP moody, AP creepy, and, at times, downright AP menacing.
Setting is important, and horror fans in particular will note that many stories involve TH Moving to a haunted house -- perchance one in proximity to people, places, and things that are TH Cursed!
As a bonus, you can pretty much count on TH Witchcraft and the occult to make an appearance.
Similar to psychological suspense, Gothic novels frequently star women who discover that the men in their lives are TH Too good to be true, perhaps even TH Real life monsters (TH Vampire menace, anyone?)
And, because characters in Gothic fiction tend to be amateur archivists, stories may incorporate TH Found footage such as diaries, letters, or lengthy handwritten manuscripts, which should please mystery readers who delight in puzzles.