The lights of the chateau were out now, and it was dark and silent, but there was a fragment of sallow moon, and by its wan light he could see, dimly, the courtyard. There, weaving in and out in the pattern of shadow, were black, noiseless forms; the hounds heard him at the window and looked up, expectantly, with their green eyes. Rainsford went back to the bed and lay down. By many methods he tried to put himself to sleep. He had achieved a doze when, just as morning began to come, he heard, far off in the jungle, the faint report of a pistol.

The details of the excerpt show that Rainsford knows he

will join the hunt the next day.
will become Zaroff’s prey.
is trapped in dangerous place.
is able to escape from the island.