Guest Stars Samantha Ferris as Lieutenant Alexa Brenner Jodi Lyn O'Keefe as Officer Jackie Kazaris Jessica Chastain as Laura Green John Fleck as Brian Nordin Co Starring Kira Clavell as Ellie Lee Christie Will as Julia Cole Sendhil Ramamurthy as Dr. Dhruv Sharan Timothy Webber as Dr. Layland Michael Sommers as Sketchy Patient Eric Schniewind as Totally Bald Man Calum Grant as Norman Kendall Igor Ingelsman as Arkady Jason Frazier as Jason Ralph Miller as Max