"The Book of Abby"
Season 15, Episode 3
Air date October 16, 2008
Written by David Zabel
Directed by Christopher Chulack
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"The Book of Abby" is the third episode of the fifteenth season of ER. It first aired on NBC on October 16, 2008. It was written by David Zabel and directed by Christopher Chulack. It has Abby leaving County Hospital on her first day as an Attending Physician. Although she tries to leave quietly, the staff makes it known how much they will miss her. It was the final regular episode of Maura Tierney as Abby until her guest appearance in the episode Shifting Equilibrium. It was also the final episode of Goran Višnjić as Luka Kovač.


Abby's first day as an Attending is bittersweet. Neela is hurt when she finds out Abby's news from someone else. Abby and the new ER Chief argue over how to treat a gunshot victim. Abby comes to Sam's aid when she faces a nurses' disciplinary board. Abby gets a job in Boston and tries to leave County General quietly, but the staff makes it known how much they will miss her. Abby says goodbye and leaves for Boston with Luka and her son.


To be added.



  • Although listed in the opening credits, David Lyons didn't appear in this episode.

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