On the boat, Rainsford and Whitney talk about the mysterious island and about the hunting trip that they are headed to.
After Rainsford swims ashore he sees a house so he goes and knocks on the front door. Then the next day General Zaroff tells Rainsford that on that island he likes to hunt the people that get lost at sea and come to shore. After that Rainsford leaves that house to prepare to be hunted.
Rainsford set up his second trap and it killed one of Zaroff's best dogs but it didn't hurt him. Then he set up his third and final trap and it killed Ivan but not Zaroff.
Aha, I got you!
After Rainsford had been chased for days he was almost caught, he was being pursued by Zaroff and a team of dogs, now he knew what the animals felt like when they were being hunted, in a last-second try to get away he jumped in the water and Zaroff didn't see him.
Rainsford swims back to Zaroff's house because he realizes it is quicker than walking. Then he pops out of the curtains when Zaroff is going to bed. Then they have a conversation about how he got there and that Rainsford was congratulated of winning the game.
Rainsford kills Zaroff and then Rainsford gets a good night of rest in his bed.