
Kathryn E. answered 06/16/19
A Linguist who Can Help You Understand Grammar
Without having the whole passage in front of me, it seems to me that sentences one and two and four clearly describe events that happened before the reference point, as you say; but I read sentence three as describing the arrival of Jones as happening after the reference point (“...the end of the next three hours...”). Sentence five is so closely related to sentence four in the narrative (two strangers’ evil actions) that the past perfect meaning in four carries over to five. When the time frame is specific, simple past is often used instead of past perfect. So, I would assume that in the story, these two strangers had attacked the narrator in the same time frame.