Marvel's Agents of S.H.I.E.L.D. Season 2 Spoilers: New Episode 12 'Who You Really Are' Clip Features Return of Jaimie Alexander as Lady Sif

Marvel's Agents of S.H.I.E.L.D. returns with a brand new episode on Tuesday entitled "Who You Really Are." A new clip from the installment features the return of Jaimie Alexander as Lady Sif.

This marks the character's first appearance in Season 2. She previously appeared in a Season 1 episode. But as the clip shows, the Asgardian returns tonight without her memories, which should mke for some interesting drama. Check it out below:

In case you missed it, here is the official description for Episode 12:

"'Who You Really Are'- Coulson and team come to the aid of a confused Lady Sif, who has lost her memory after fighting with a mysterious warrior whose true mission will send shockwaves through S.H.I.E.L.D. Meanwhile, Bobbi and MacK continue to hide their true mission from everyone close to them, on Marvel's Agents of S.H.I.E.L.D., Tuesday, March 10 (9:00-10:00 p.m., 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 and Nick Blood as Lance Hunter.

Guest starring are Adrianne Palicki as Bobbi Morse, Henry Simmons as Alphonso 'Mack' Mackenzie, Jaimie Alexander as Lady Sif, Eddie McClintock as Vin-Tak, Alexandra Manea as nurse, Lidia Porto as head nurse, Danny Lopes as Bruno, Ben Griesse as Tiago, Ruben Rabasa as Mr. Cardozo and Markell Andrew as officer Carvalho.

'Who You Really Are' was written by Drew Z. Greenberg and directed by Roxann Dawson."

What do you think of the clip? Let us know in the comments section.