Actress Jenny Bacon (Officer Marissa Hastings) has also appeared in Law & Order: Criminal Intent (2001) and twice in Law & Order: Special Victims Unit (1999).
Skipp Sudduth has played three different roles over the course of the series:
- Episode 5.17 Act of God (1995) - Henry 'Hank' Chappel.
- Episode 7.5 Corruption (1996) - I.A.B. Detective.
- Episode 9.17 Shield (1999) - Officer Cass.
Madison Arnold has played five different roles over the course of the series:
- Episode 1.13 A Death in the Family (1991) - Bridges.
- Episode 6.23 Aftershock (1996) - Leonard Jensen.
- Episode 9.17 Shield (1999) - Mr. Pelham.
- Episode 10.11 Collision (2000) - Patrick Clarke.
- Episode 15.14 Fluency (2005) - Reimer.
- Episode 19.10 Pledge (2009) - Saul Lasky.