OK, I have a vague recollection of an old scary sci-fi film I saw on TV when I was a kid. It was in Canada, and it would have been late '70s (maybe very early '80s). I'm trying to recall its name.
The only scene I recall is a person walking through the woods and there's some sort of humanoid monster, poorly costumed and poorly seen, who lunges out of the shadow of a tree and stabs the person by shoving some sort of dagger-like claw into them a few times.
I'm pretty sure the monster was supposed to be an alien of some sort.
Pretty sketchy, sorry.