Finch's death is the third murder investigation in which Buffy has been involved in less than two years. She was previously suspected in the deaths of her would-be stepfather, the robot Ted (Ted (1997)), and fellow Slayer Kendra (Becoming: Part 2 (1998)). Additionally, both of the previous cases were investigated by the same detective, Paul Stein.
When Buffy confronts Faith at the docks, the ship in the background is the Tanager. This same vessel also featured prominently in The Usual Suspects (1995).
Although credited, Oz does not appear as Seth Green was away filming Austin Powers: The Spy Who Shagged Me (1999). This is the only time during Season 3 that a main character is absent.
Wesley is shocked to learn that Cordelia is a student at Sunnydale High (and not a teacher, as he first assumed), since this means that she is a lot younger than him. In real life, Charisma Carpenter (Cordelia) was 28 years old when this scene was filmed and additionally, she is only four years younger than Alexis Denisof (Wesley). In fact, in real life, Alexis Denisof would later go on to marry co-star Alyson Hannigan (Willow), who is younger than him by eight years.
Faith says to Buffy "We are the law." Later, Buffy mentions in Selfless (2002) that she was the law.