John Sheppard and Rodney McKay go to New York when Ancient technology is involved in the death of an astrophysicist. They inspire Richard Castle to write science fiction.

John could hear the pair working the Wraith crime scene before they saw them: a rather excitable male voice doing most of the talking, and a firmer, slightly amused woman, offering the occasional counterpoint.

Rick Castle loved people watching... Set right before the pilot of Castle.