This is one of only a handful of episodes in which the district attorney (Adam Schiff) shares a scene with a cop (Lennie Briscoe).
Lennie Briscoe was originally from the 116th Precinct in Queens, where he worked for three years. This episode alludes to the theft of some drugs, which supposedly happened five years before this episode took place. Lennie Briscoe had been at the 27th Precinct for approximately five years, meaning he came directly from the 116 to the 27. There is no reference to AA, which Lennie was in at the time he originally came to the 27.
Lennie Briscoe: (to Rey Curtis) You know, you're turning into one of these conspiracy nuts. You ought to meet my cousin, he still thinks NASA faked the Moon landing.
Lennie Briscoe: Give me another club soda. And put it in a dirty glass.
John Flynn: What we strive for in these situations is uniform recollection of events. The rat squad wants to hear the exact same words coming out of everybody's mouth.
Lennie Briscoe: If you don't take her out of there right now, I'll kick your ass from here to Hoboken.
Rey Curtis' mother is Peruvian, as is Benjamin Bratt's mother.
This episode appears to be ripped from the headlines of the 1967 through 1972 thefts of heroin from the Department Property Clerk's office of the New York City Police Department. Over the course of five years, over $70 million in heroin and cocaine were stolen from evidence, with the thieves using a variant of ID's, all based off of Detective Joseph Nunziata's information. Nunziata was found dead before the investigation could be concluded, and it could never be ascertained whether or not he was connected to the thefts.