Christine Baranski (Diane Lockhart) & Stephen Root (Judge Murphy Wicks) previously worked together on episode 1.5, Starting on the Wrong Foot (1995), of Cybill (1995) as Maryann Thorpe & Phil Asher respectively.
Jane Alexander reprises her role of Judge Suzanne Morris in The Good Wife spin-off, The Good Fight (2017).
Archie Panjabi (Kalinda Sharma) & Marc Warren (Nick Savarese) both worked on Life on Mars (2006), although did not share any scenes.
Archie Panjabi (Kalinda Sharma) & Nancy Ellen Shore, who plays a number of various small parts in four separate episodes of this series, also worked together on episode 2.2, Heave Fiery Knot (2016), as Nas Kamal & the former FBI Director respectively.