Nick Gehlfuss), Ethan Choi (Brian Tee) and cardiologist Sabeena Virani (guest star Tehmina Sunny), and only ET premieres an exclusive first look at Wednesday's episode, directed by S.J. Main Muñoz, as the tension begins to thicken.In the clip, Ethan spots Will and Sabeena, who have grown closer while working on the clinical trial, walking together down the hospital hallway as they make plans for a five-course meal kit dinner.