Agents of S.H.I.E.L.D. star Clark Gregg has revealed the first details about Season 6. Gregg, who played the recently-deceased Phil Coulson over the first five seasons, explained that the 13-episode sixth season will be split into two parts. The first half will explore "strange anomalies," while the second half will send the team into space to find Fitz.

"I know that Season 6 starts out with the S.H.I.E.L.D. team on Earth, grieving, trying to take on on the duties of S.H.I.E.L.D. and dealing with these strange anomalies that have wreaked mass chaos, and they seem to get some images of people from somewhere else who are committing these things," Gregg told ET. "The other half of the team is off in space, looking for the frozen Fitz from the future... And suddenly, it becomes clear that one of these people is wearing a very familiar face."

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As to how his character Phil Coulson returns, he offered an ominous hint. "What [producers] Jed and Mo Whedon and Jeff Bell came up with, with the other writers... I’m really excited for people to see what they came up with. It may be a little disturbing, but this is a very different person," he teased.

"There’s a big mystery here," he added. "And I think that this person is as surprised as they are, that they seem to recognize his face... I probably wasn’t supposed to say that."

Agents of S.H.I.E.L.D. is set to return for its sixth season in July 2019 on ABC with 13 new episodes. The series stars Ming-Na Wen, Chloe Bennet, Henry Simmons, Iain De Caestecker, Natalia Cordova-Buckley and Elizabeth Henstridge.