Narrator and point of view

The short story “Tell the Women We’re Going” by Raymond Carver is told from the point of view of a third-person narrator. The story appears to follow Bill’s perspective, so the narrator is limited. Bill can only guess that there is something wrong with Jerry, as suggested by the following paragraph from the text: 

Bill was thinking how Jerry was getting to be deep, the way he stared all the time and hardly did any talking at all. Bill moved in his chair and lighted a cigarette. He said, ‘Anything wrong, man? I mean, you know.’ (p. 183, ll. 26-28)

As we see things from Bill’s perspective, we are caught by surprise at the end when Jerry kills the girls, because Bill did not see it coming, and he had different plans with the girls:

Bill had just wanted to fuck. Or e...