Bones, Season 6

[Walter answers his cell in the toilet]

Walter:
Who is this?

Brennan:
[at the other end with a surprised, confused look] It's Dr Brennan at the Jeffersonian. Don't you have caller ID?

Walter:
Caller ID doesn't tell you who's calling, it tells you the phone company wants you to think is calling. Eh, did you guys find out that the victim was terminally ill?

Brennan:
Yes...His mitral valve is completely calcified. How did you know?

Walter:
He had pyramids on the ceiling of his bedroom.

Brennan:
Wh..Pyramids indicate heart disease?

Walter:
Of all the things humans created, pyramids stood the test of time best. Dying people invest all sorts of meaning in it. So, uh, did you find any signs of torture?

Brennan:
Yes, I did. Three fingers were dislocated shortly before death. It's possible, given his heart condition, the victim died with his secret intact.

Walter:
Nope, he told the killer where to find the map.

Brennan:
What...Did you know where?

Walter:
Poor man's safety deposit box. [looks at the victim's pawnshop's receipt]

Brennan:
I..I don't know what that means.

Walter:
Pawnshop. You got anything else?

Brennan:
No, I'm done.

Walter:
Yup, me too. [flushes the toilet; Brennan gives a confused look after hearing the flushing sound on the other end]