Kill the infection! Kill the Infected!

In the aftermath of the battle for Monk’s Island, Murphy has been nursing Zed back to health in a remote house at the west end of the lake. But every day they see helicopters cross the sky, heading south and then back north again.

Zed wonders if the helicopters are proof that not all civilization has collapsed. He convinces Murphy to seek out the place where the helicopters are landing so they can find the answer to that question. What they find at the end of their journey is both more dangerous and hopeful than either would ever have guessed.