S10, E5: Lewis fears for a distraught architect, Ben Hollander (recurring guest star, Emmy Award winner Bob Newhart - "The Bob Newhart Show"), whose degenerating eyesight makes him despondent. A spirited new nurse, Samantha Taggart (new series star Linda Cardellini), replaces Abby, who has decided to return to medical school. Meanwhile, the doctors suspect a mother is abusing her child. Corday learns something shocking about the charismatic Dr. Dorset (recurring guest star Bruno Campos). And an inexperienced medical student is overwhelmed by the chaos and grisly conditions of life in the emergency room.