Law & Order: Criminal Intent

Josh Lemle: I picked it up Tuesday from my Deep Throat, Yuri. "Deep Throat" was the nickname for Woodward and Bernstein's confidential inside source during their investigation of the Watergate scandal, immortalized in their book All the President's Men. The name was a reference to a pornographic movie starring Linda Lovelace. Deep Throat's identity was widely speculated about for years; the source turned out to have been Mark Felt, who was the Deputy Director of the FBI during Watergate.

Danny Ross: A Brighton Beach Walter Mitty. Walter Mitty is a character created by writer James Thurber for his short story, "The Secret Life of Walter Mitty." Walter is a man with a vivid fantasy life. The name has been used as an insult in both US and UK political circles. Brighton Beach is primarily known as a Jewish community located in Brooklyn, New York, although it has a rich ethnic mix. Mitty was a resident of Waterbury, Connecticut.

The episode title, "30", is an old reporters' shorthand which means end of story. It is always written with hyphens fore and aft. Its origin has been attributed to the early days of telegraphy, when XXX (which is 30 in Roman numerals) signified end of message. Whatever its origin, the use was established around the time of the Civil War. Since it was originally intended as an instruction to typesetters, its appearance has declined since the advent of computerized typesetting.

Doctor: Josh Lemle is a dead man walking. 'Dead man walking' is an expression that refers to a prisoner who is about to be executed. It's also the title of a movie starring Sean Penn as a death-row inmate and Susan Sarandon as his spiritual advisor.