Marmee Regine Cosico plays a gallery member In this episode and one other. In episode 6.5, Shiny Objects (2014), she plays a Soup Kitchen worker.
Chris Noth (Peter Florrick) & Jack Gilpin (?) also worked together on episode 5.12, Progeny (1995), of Law & Order (1990) as Mike Logan & Dr. Simon Reed respectively.
Alan Cumming (Eli Gold) & Luke Robertson (Kevin) also worked together on episode 1.4, I Heart New York (2018), of Instinct (2018) as Dr. Dylan Reinhart & Kyle respectively.
Chris Noth (Peter Florrick) & Ann McDonough (Joan Anderson) also worked together on episode 4.20, Nurture (1994), of Law & Order (1990) as Mike Logan & Peggy Sylvester respectively.