But things really took off for the blonde beauty in 2013 when she took her first steps on the set of NCIS as Eleanor "Ellie" Bishop. Initially, Emily was cast as an NSA analyst, who was only meant to have a three-episode arc. It wasn't long before the sometimes snarky, always fierce Bishop became a series regular.

What episode does Emily Wickersham joins NCIS?

Wickersham was promoted to the main cast, two weeks prior of her debut appearance. Her first appearance is in episode nine, "Gut Check".

Why did Ellie Bishop leave NCIS?

At the end of the Season 18 NCIS finale, Eleanor Bishop (Emily Wickersham) resigned her job after it was discovered that she had leaked an NSA document 10 years earlier. However, it was really just a ploy to become a disgraced agent so she could go undercover on an operation.