Salvageable ?
I happen to like this flic for a number of reasons though as a rule I largely detest "slasher"movies as a rule.
What I like here is Price and Cushing as a duo for starters;Quarry is ok but mostly a token player.
There is ambience and that scores a few points.I like the empathy we are to feel for Vinnie and too I dig the old film clips we see sprinkled throughout the story.
On the downside the tale overall is rather thin and brittle.I like Julia as a ingenue and as a pert and cute relief from the other "goings-on"
Not a strong entry in the genre but certainly as a curio piece of mediocrity it barely passes the mark but granted there is some entertainment present with Spider-Lady and other selected scenes.