Last season on "Marvel's Agents of S.H.I.E.L.D.", Jaimie Alexander made the jump from the big-screen to TV, reprising her "Thor" role of Lady Sif in a March episode. Now one year later -- nearly to the day -- Alexander is set to return to the show, albeit this time, she's dealing with memory loss when she encounters Agent Coulson (Clark Gregg) and his team.

ABC has released 13 images from next week's episode -- featuring the amnesiac Sif, Bobbi Morse (Adrianne Palicki, Mack (Henry Simmons) and more.

"Who You Really Are," the latest episode of "Marvel's Agents of S.H.I.E.L.D.," is set to air 9 p.m. Tuesday, March 10 on ABC. Here's the official description of the episode:

"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 Mac 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.