Did anyone first get suspicious of Kim Novak. . .
(spoiler)
. . .When she (he) refused to put on the life vest and the helmet in the rescue helicopter? I must admit, I didn't see the ending coming at all -- but my first real inkling of what was going to happen occurred when Kim Novak refused the safety equipment. I wonder why she (he) did that? Was it because she (he) knew it was not going to be needed? Or maybe just because the director and the screenwriter thought it would be ridiculous and unscary for the real villain to wear a life vest and helmet?