This isn't just any dead body. It's the dead body of a lottery winner, meaning there are many suspects who was after his money.
You're looking at a photo from "Lucky Stiff." It's the 2/7/11 episode of Castle.
So, who done it? Castle and Beckett face that question when a lottery winner is found dead on "Lucky Stiff."

Castle Season 3 Episode 14 Quotes

While you guys are fantasizing about the size of your rods, I'm going to go interrogate our suspect.


Good thing I'm not a one hit wonder.


Castle Season 3 Episode 14 Music

  Song Artist
Benny blanco and spank rock loose Loose Benny Blanco & Spank Rock iTunes
Song Money ($$$) Tim Myers
Song Move That Ass (Get On the Floor) The Page Brothers