"Wait 'til you see the underside of the railway, kid. You'll love it there," Sinclair says, laughing. At least now it feels like he's starting to break Jack out of his shell. It appears he's got a sense of humor after all! Praise the deity of your contraband religion!

The bathysphere finally docks at Olympus Heights, bobbing in the water for a few seconds before it begins to stabilize. Sinclair stands up and pushes the door open, right hand immediately seeking out the gun at his hip.

Did he say they'd be safe here? Obviously he meant they would be as soon as they got to his room. Even from here, it's easy to hear the deranged yells and muttering and occasional singing from not far enough away.