Guest Stars Ari Graynor as Rachel Dunham Chance Kelly as Mitchell Loeb Michael Gaston as Sanford Harris Trini Alvarado as Samantha Loeb Co Starring Lily Pilblad as Ella Blake Chinasa Ogbuagu as Agent Lloyd Brian Slaten as Man Stephen Schnetzer as Professor Miles Kinberg Sarah Wilson as Tara Coleman Peter Jay Fernandez as Dr. Russell Simon Chad Gittens as CDC Agent Uncredited Michael Cerveris as September