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Abby gets a Dear John letter from Carter that makes the rounds faster than the hyper new resident (Glenn Howerton) whom Neela nearly kills with too much asthma medication. Meanwhile, the nursing crisis reaches a fever pitch.

Pratt and Weaver wind up on the wrong side of two judgment calls during a hellacious night shift that also finds Abby seeking funds for a hush-hush personal endeavor.

Bob Newhart begins a three-episode role as an ailing architect whose gradual loss of vision touches a nerve in Lewis. Meanwhile, the rest of County is thrown off by a staggering backlog of patients.

Susan goes above and beyond the call of duty to help Ben Hollander (Bob Newhart) cope with his failing vision; Pratt s actions backfire for a mother in drastically premature labor; Abby uses her surgical rotation to teach a widow about organ donation.

Lewis s busy workload threatens to keep her from an important date with Hollander (Bob Newhart); Kovac and Corday clash over the treatment of a patient with questionable symptoms; and Sam s son spends a day underfoot at the ER.