It is disclosed here that Captain Cragen's deceased wife was named Marge, and died in a plane crash while she was working as a flight attendant.
Det. Munch (Richard Belzer) has a framed photograph of former president John F. Kennedy (b.1917, d.1963) on his desk.
Cragen talks to Olivia about events that transpired in The Blue Wall (1991) while he was the commanding officer of the 27th precinct, in that episode he was investigated by Internal Affairs for allegedly taking bribes, though it was proven that Cragen was being framed. That episode is also the only time Cragen's wife, Marge ( Ellen Tobie ), is seen on screen.
Capt. Cragen refers to a former plot line that took place during the end of Season 1 of Law & Order (1990) during a discussion with Olivia.
This episode marks the first appearance of the four Stabler children in the series.