[s4e22] Raven & The Swans [INSTANT]

To catch the criminal responsible—Nolan Vanderburg—the team sets up a sting at a hotel.

Summarize the that follows shortly after this episode. "NCIS: Los Angeles" Raven & the Swans (TV Episode 2013) [S4E22] Raven & The Swans

Nell joins the mission undercover as a maid but finds herself in a dangerous spot before being rescued by Kensi. The story begins with a violent attack in

The story begins with a violent attack in a parking garage where gunmen stalk an unidentified woman. Hetty cryptically assigns the team to investigate the scene, where they find no identifying data about the victim. The case takes a personal turn when Hetty reveals the missing woman is (played by Andrea Roth), an undercover NCIS agent from Hetty's past who has been hiding in the team's boathouse. Key Plot Points Key Plot Points List other episodes where are revealed

List other episodes where are revealed.

Provide more details on the relationship development in this episode.