Bethany asks Paul in this episode if he is Columbo (1971). William Shatner appeared in Columbo twice, in the episodes Fade in to Murder (1976) and Butterfly in Shades of Grey (1994).
Craig Bierko (Jeffrey Coho) & Constance Zimmer (Claire Simms) also worked together on UnREAL (2015) as Chet Wilton & Quinn King respectively.