Dr. Sid Hammerback: Cause of death was not natural. He was in superb shape, lungs, heart, all vital organs are near perfect.
Detective Mac Taylor: So you're saying... he's actually still alive?
Detective Danny Messer: Colin Flynn?
Colin Flynn: Yeah, that's me.
Detective Danny Messer: NYPD, we got a couple of questions for you, alright?
Colin Flynn: Do I have to answer?
Detective Don Flack: I'm not a lawyer... but yeah, you do.
[Stella and Hawkes walk into Mac's office]
Dr. Sheldon Hawkes: Autopsy results?
Detective Mac Taylor: This is a good one. A runner who somehow has frostbite on his face in 90 degree heat, who died of carbon monoxide poisoning in the middle of Central Park.
[Mac smirks, as Hawkes just looks dumbfounded]
Detective Stella Bonasera: That's just...
[thinks for a brief moment]
Detective Stella Bonasera: not possible.
[referring to the New York Marathon]
Detective Stella Bonasera: What makes someone want to run 26.2 miles anyway?