Steven Albright: Sir, you don't have to hold your breath. There's plenty of air.
Adrian Monk: [exhales] How much time?
Steven Albright: 15 seconds.
Adrian Monk: I'm pretty sure he killed himself.
Natalie: How do you know?
Adrian Monk: I've been on board 15 seconds and I'm suicidal.

Adrian Monk: It doesn't feel like a man-made boat or a submarine. It feels like a living thing. Like a beast. And I'm in- In the lungs or the stomach. It's like it's swallowed me whole. I feel like it's digesting me. Honestly, I don't know what I'd do if you weren't here.
Dr. Bell: [imaginary] Yes, it's quite fortuitous. I heard you were on a submarine, and I thought you could use my help. So I climbed on board just as the ship was going underwater.
Adrian Monk: Wow. What do we do now?
Dr. Bell: Well, we're gonna take it one day at a time. One hour at a time. We're gonna get through this together.
Adrian Monk: Hmm.
Dr. Bell: I've been observing you, Adrian. You're doing very well in spite of your condition. Your acute claustrophobia.
Adrian Monk: Well...
Dr. Bell: I'd even say you're being rather heroic.
Adrian Monk: [chuckles] I have to be brave for Natalie's sake. She's just a girl. She's depending on me.
Dr. Bell: Well, she's lucky to have you.
Adrian Monk: That's true. What? Medal of honor? I think that's a bit premature, Dr. Bell.

Adrian Monk: Wait. Dr. Bell, he's right outside. Dr. Bell, open the hatch! Dr. Bell!
Natalie: Dr. Bell! What am I saying? Help, somebody, help!