Actors Juan Castano and Stephen Kunken later starred together in the off-Broadway show A Parallelogram (2017, New York City). Incidentally, their two A Parallelogram co-stars - - Celia Keenan-Bolger and Anita Gillette - - also were in episodes of Elementary (Celia, in episode 4.6; Anita, in 3.20). Celia Keenan-Bolger is also married to John Ellison Conlee, who guest starred in Elementary episode 4.4.