McKay and Keller in “Unfinished Business”

McKay

It started suddenly, and then it just stopped.

Keller

Okay, well, I appreciate you telling me.

McKay

Aren't you gonna do anything?

Keller

To be honest, I don't see how it's relevant.

McKay

Well, it's a new symptom. I thought it just might be important.

Keller

I don't see how a tingling sensation in your knees relates to this condition, especially since you're the only one experiencing it.