What is the climax of Three Skeleton Key?

The rats enter the lighthouse and force the three survivors to the very top. A rescue ship comes after the lighthouse light is not lit and save two out of the three survivors by tricking the rats onto a ship with a rigged bomb.

The climax is when you can see the problem being solved. This is when the barge comes with the meat. The rats swim to eat the meat.

Resolution / Conclusion = rats dead / men "safe" when the barge is set ablaze. This is exactly right=) GOOD JOB!