Shalu, I'm back. Read your prologue and author's note again. I was stuck by one aspect which did not strike me in my earlier reply. Generally, fear is more predominant and powerful when you can't exactly describe it. If you know what is exactly affecting you, you can take steps to prevent and overcome it.
Both the women in both the eras saw something which blew away their senses. But they had that knowledge which told them what and whom to avoid, even though they were unsuccessful as they were overpowered by the superior strength of the Hunters.
People (The Hunters and Gatherer) who worked together originally in the prehistoric past are pitted against each other in the modern period suggesting a degradation in moral values and relationships. It also suggests that both the Hunters and the Gatherer belong to the same blood line. That is, they are relatives.
The Hunters in both the cases wanted to conceal their real identity of being Hunters. Both of them were putting up a facade or false mask before the rest of the world.
Even if we take the jungle example into consideration we can say, that the deer is always the first to smell the hunter but is killed before it can escape. The Gatherer comes into play only much later as he just has to pick up the trail of clues left behind by the Hunter and gather the meat.
Why should the Gatherer have that chance the second time round which he did not have the first time? It could be because of the recurring patterns which occur before the crime is actually committed. The last time it happened, the Gatherer was unprepared but this time round his sixth sense and intuition will remind him of how it's a replay of the past.
Another thought which came to me, was that of legacy or passing on certain traits genetically. The first Hunter and second Hunter are related to each other somehow. That's why the second Hunter comes to the same place (Sheesh Mahal) to avenge or perform some unfinished deed.
Since the Hunter in both the cases is described as being young, he cannot be the same. There is a definite time gap between 1988 and 2011. Which means, it's a second generation Hunter.
The setting for these terrible events is the Sheesh Mahal which appears to be very tall and imposing but is so hollow inside that it can be shattered by a small piece of stone just like glass or "sheesha".
For some strange reason when you were stressing on the plural of the Hunters I was reminded of H.G. Wells Dr. Jekeyl and Mr. Hyde. In this novel, people regarded Dr. Jekeyl and Mr. Hyde as two different people while in reality they werre one. Does your plural of Hunters refer to one single person with two different faces? Just a thought! Completely contradictory to my earlier arguments about the genetic factor and age factor.