Betsy Beutler

Dr. Kelso and Dr. Cox try to oust Dr. Maddox (Courteney Cox) from Sacred Heart; Carla decides to take a self-centered, incompetent intern down a notch.

The new chief of medicine turns out to be as callous as Dr Kelso, JD gives up on his intern class after they let him down, and Eliot is too self-absorbed to realise that Keith is still hurt from their break-up.

JD enlists the help of Elmo from The Muppets to teach the gift of compassion to a blunt intern Denise but is disappointed when even Elmo can't make Denise more empathetic. Elliot's intern meanwhile, boasts that she has her mentor wrapped around her little finger.

When a man is found castrated and left for dead, Rollins and Carisi uncover three female suspects who have possible motives; Langan gives devastating news to Benson.

A full moon and a healthy dose of bad luck bring Sacred Heart's new crop of interns their roughest case load yet, while Elliot has a revelation about her future as a doctor.

JD argues with the Chief of Medicine, but Turk is jealous when the staff show his best friend a new level of respect. Meanwhile, the Janitor convinces JD that he has been hypnotised and Carla is attracted to her new intern.