Emily Wickersham, who was cast as NSA analyst Eleanor Bishop on NCIS in September, has officially been promoted to series regular by CBS, effectively replacing the outgoing Cote de Pablo. Wickersham's first episode airs on November 19 though bosses have already bumped her up the cast list. No idea who she is? Then check out our Emily Wickersham pictures!

Emily Wickersham NCISMark Harmon [L] and Emily Wickersham [R] on NCIS

"Emily Wickersham's Ellie Bishop is proving to perfectly compliment the NCIS team," said executive producer Gary Glasberg in a statement. "Her energy and enthusiasm is contagious.  Great things are planned for Bishop and we couldn't be more thrilled to have her on-board."

The actress was originally slated for just three episodes though early filming was enough to convince producers that Wickersham has the on-screen presence to replace the charismatic de Pablo, who stunned show bosses by turning down "a lot of money" to remain on the crime-drama.

Described as "a mysterious mixture of analytic brilliance, fierce determination and idealism," Emily's character will be introduced when it is discovered that the Secretary of the Navy was bugged during a confidential briefing, a security breach Bishop described in exact detail two years ago in a threat analysis report, according to Entertainment Weekly.

Emily Wickersham NCISEmily Wickersham [R] as Eleanor Bishop in NCIS

Early this year, actor Michael Weatherly said of Wickersham's arrival, "We're excited about is having Emily join us on these little adventures we do every week and seeing how she is in the world that we create together.I hope the audience likes her as much as we did right away," he said.

So who the hell is Wickersham? Well, fans of high class TV drama might know her best as Rhiannon Flammer, the girlfriend of A.J Soprano on The Sopranos. She also appeared on the short-lived but excellent Bored to Death and the movies I Am Number Four and Remember Me.