Executive producer and creator Tim Kring was at first reluctant to cast Jill Hennessy as the impulsive, abrasive medical examiner Jordan Cavanaugh, knowing only her work as the straight-laced Assistant D.A. Claire Kincaid on Law & Order (1990) and as Jackie Kennedy in Jackie, Ethel, Joan: The Women of Camelot (2001). Agreeing to meet for breakfast, Kring was embarrassed to discover the restaurant he had chosen was closed when they arrived. Kring started to apologize, but Hennessy, unfazed, said, "Dude, who gives a shit? We'll go someplace else." Kring recalled thinking, "Oh, my God, this is Jordan."
Nigel mentions having a blog on the internet at www.nigelblog.com. The web address lead at one point to a blog website with information about cases. It currently redirects to the Universal Pictures website.
Both Miguel Ferrer and Jill Hennessy played in Robocop films: Ferrer appeared in RoboCop (1987) as Robert 'Bob' Morton, the OCP executive who built Robocop; Hennessy played in RoboCop 3 (1993) Dr. Marie Lazarus, OCP technician who fixed Robocop after he was severely damaged.