Rigsby asks Cho the riddle about being on a desert island with Attila the Hun, Joseph Stalin, and a lawyer, and a gun with only two bullets. Cho refuses to play along. The punch line is, you shoot the lawyer. Then you shoot him again just to be sure.
Owain Yeoman, who plays Wayne Rigsby, is to fake an Irish accent in this episode. He in fact is actually Welsh, normally faking his American accent.
When Lisbon and Jane are speaking to the FBI agent at the beginning of the episode, you can see a picture of a dog on Lisbon's desk. However it's never shown or mentioned that she has one, even in scenes at Lisbon's home.
Red-haired actresses: Heather Mazur, Catherine Dent, Ely Pouget.