Characters: Nolan Stross, Isaac Clarke
Can be found: Acquired in the room after the Stalkers.
- Stross: Isaac?! He's gone. Listen, the steps can destroy the Marker. Step 1, crawl into the dark machine. Step 2, the screws go tight, all around...
- Isaac: I don't understand.
- Stross: Oh God, he's back! NO! No no no no no!