This episode appears to be based on two separate cases/incidents:
- The 2006 Adrienne Shelly case. Shelly was murdered by an illegal Ecuadorian construction worker named Diego Pillco on November 1, 2006. Shelly previously played Wendy Alston in High & Low (2000).
- The career and 2004 assassination of Theo van Gogh.
Jason Kolotouros has portrayed three different characters throughout the series:
- Episode 8.21 Bad Girl (1998) - Tilden.
- Episode 11.2 Turnstile Justice (2000) - Dr. Sanders.
- Episode 13.1 American Jihad (2002) - Derek Greer.
- Episode 13.14 Star Crossed (2003) - Derek Greer.
- Episode 14.7 Floater (2003) - Derek Greer.
- Episode 17.15 Melting Pot (2007) - Derek Greer.
Anthony Mangano has played four different characters over the course of the series:
- Episode 6.8 Angel (1995) - Sluizer.
- Episode 8.4 Harvest (1997) - Palacio.
- Episode 13.7 Open Season (2002) - Public Officer Vitelli.
- Episode 17.15 Melting Pot (2007) - Sal Garcetti.