When drugs go missing, Elliot suspects a patient who is a former drug addict, but Alex defends him. Elliot tells J.D. that she thinks Alex will hurt him and J.D. accuses her of being jealous. Alex ends up being the one who took the drugs. She and J.D. part on uncertain terms, and J.D. tries to confront Elliot about her accusation of the patient. They end up in bed. Carla gets a ride from Dr. Kelso. Dr. Cox realizes he has feelings for Carla.