Here’s our first look at tomorrow night’s musical number that takes place during Peggy’s dream, which includes a guest appearance by fan-favorite waitress/actress Angie Martinelli, played by Lyndsy Fonseca. “A Little Song and Dance” airs tomorrow night following “The Edge of Mystery.”

Official Synopsis for Episode 9:

PEGGY FACES SHOCKING BETRAYALS AS SHE CLOSES IN ON WHITNEY FROST, ON “MARVEL’S AGENT CARTER” ON ABC

Lyndsy Fonseca Guest Stars as Angie Martinelli, and the Episode Includes a Dance Number Featuring the Show’s Cast and “Dancing with the Stars” DancersLouis van Amstel, Dmitry Chaplin, Damian Whitewood, Sasha Farber, Anna Trebunskaya and Karina Smirnoff.

“A Little Song and Dance” – Peggy desperately tries to save Dr. Wilkes with a dangerous plan to stop Whitney Frost.  But Thompson makes a surprising move that could destroy them all, on “Marvel’s Agent Carter,” TUESDAY, February 23 (10:00-11:00 p.m. EST) on the ABC Television Network.

“Marvel’s Agent Carter” stars Hayley Atwell as Agent Peggy Carter, James D’Arcy as Edwin Jarvis, Enver Gjokaj as Chief Daniel Sousa, Wynn Everett as Whitney Frost, Reggie Austin as Jason Wilkes and Chad Michael Murray as Chief Jack Thompson.

Guest starring are Lotte Verbeek as Ana Jarvis, Lesley Boone as Rose, Bridget Regan as Dottie Underwood, Rey Valentin as Agent Vega, Kurtwood Smith as Vernon Masters, Ken Marino as Joseph Manfredi, Matt Braunger as Dr. Samberly, Max Brown as Michael Carter, Tim Soergel as Paul, Bert Rotundo as Ralph, Lyndsy Fonseca as Angie Martinelli, Lon Gowan as truck driver and Russell Edge as Agent Blackwell.

“A Little Song and Dance” was written by Michele Fazekas and Tara Butters with teleplay by Chris Dingess and directed by Jennifer Getzinger.

‘Agent Carter’ Season 2, Episode 9 “A Little Song and Dance” airs Tuesday, February 23rd at 10pm on ABC.