The term 'intertextuality' is used for when thriller movies borrow and use parts from eachothers idea's. This will be done quite a lot in our own productions i should imagine.
A fine example is shown in the previously mentioned 'The Stepfather'.
- Parallel with Hitchcock's Shower Curtain Scene in Psycho- when the stepfather is seemingly killed he falls against the shower curtain in a mess of blood.
-Numerous (too many) thriller and horror films center the basis of their scares in the basement of a house (if set in a domestic environment). The stepfather has all of his secretive operations going on down here.