'Marvel's Agents of SHIELD' watch 'Game of Thrones' - See the pic

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Brett Dalton, Iain De Caestecker and Ming-Na Wen are hard at work on the "Marvel's Agents of SHIELD" set -- hard at work catching up on "Game of Thrones," that is. The trio was caught in the act watching the hit HBO fantasy series by their costar Clark Gregg, who hopefully wasn't also watching because he's already up-to-date.

"A of S watching G of T," he captions the image on Instagram.

Considering the look on Caestecker's face, many fans are speculating that the three actors were photographed watching the infamous Red Wedding scene from Season 3. Hopefully that doesn't cause Jed Whedon and Maurissa Tancharoen to get any ideas about storylines they should try on their show, as Joss Whedon is already known for killing off fan-favorite characters.

"Marvel's Agents of SHIELD" premieres on ABC on Sept. 24 at 8 p.m. "Game of Thrones" returns to HBO in Spring 2014.

Photo/Video credit: Instagram