Agents of S.H.I.E.L.D.: "One Door Closes" Synopsis Released, Featuring Lucy Lawless

aos-one-door-opensMarvel.com has debuted the official synopsis for "One Door Closes," the episode of Marvel's Agents of S.H.I.E.L.D. set to debut on March 31.

The episode features the return of Lucy Lawless as Isabelle Hartley, although whether her character is actually alive or there's a flashback isn't clear.

You can check it out below.

"One Door Closes" - War comes to Coulson’s doorstep in a way he never anticipated as shocking revelations are brought to light, and Skye struggles to control her new abilities but will soon make a decision that irrevocably changes her life, on "Marvel's Agents of S.H.I.E.L.D.," Tuesday, March 31 (9:00-10:00 PM, ET) on the ABC Television Network.

"Marvel's Agents of S.H.I.E.L.D." stars Clark Gregg as Director Phil Coulson, Ming-Na Wen as Agent Melinda May, Brett Dalton as Grant Ward, Chloe Bennet as Agent Skye, Iain De Caestecker as Agent Leo Fitz, Elizabeth Henstridge as Agent Jemma Simmons, Nick Blood as Lance Hunter and Adrianne Palicki as Bobbi Morse.

Guest starring are Henry Simmons as Alphonso "Mack" Mackenzie, Lucy Lawless as Isabelle Hartley, Edward James Olmos as Robert Gonzales, Jamie Harris as Gordon, Christine Adams as Agent Weaver, Kirk Acevedo as Agent Calderon, Cornelius Smith, Jr. as Case, Sai Rao as Susanna, Mackenzie Astin as Tim Maguire and Rick Otto as lead Hydra agent.

"One Door Closes" was written by Lauren LeFranc & Rafe Judkins and directed by David Solomon.