Paige Turco (Kathleen Raines) and Diane Neal (ADA Casey Novak) starred in a much earlier episode of the show together, season 3's Ridicule (2001), where they portrayed two friends who raped a man.
This episode is apparently loosely based on the reason why Arnold Schwarzenegger and Maria Shriver divorced.
Kyle MacLachlan (Andrew Raines) previously played the role of Dr. Brett Morton in episode 6.6, Conscience (2004).
Kyle MacLachlan and Dann florek also appeared together in The Flintstones (1994)
It is explicitly stated that the character Briggs used to work in Major Case. This might be a reference to Twin Peaks (1990), which contained a character called Major Briggs and had this episode's guest star Kyle MacLachlan in its leading role.