Director Coulson's secrets are about to come tumbling out on Agents of SHIELD.

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SHIELD's new leader has a teeny tiny problem - he keeps scrawling alien gibberish on any surface he can find. Skye (Chloe Bennet) and Agent May (Ming-Na Wen) are both in on Coulson's (Clark Gregg) little secret, and soon the rest of his team may be as well.

At PaleyFest NY, Gregg told HNGN that the ABC series would delve into the GH325 "pretty damn soon," and it looks like Agents of SHIELD will deliver on this promise during episode 7.

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Appropriately titled "The Writing on the Wall," the Craig Titley-penned episode will see SHIELD investigate a series of murders where the victims will have some familiar alien symbols marked on their bodies.

As they mystery deepens, Coulson's condition may take a turn for the worse.

"It seems to be progressing and that can't be good," Gregg said, according to HNGN. "It certainly seems... that it may soon become 'Crazy Is the Head' that wears the ostensible crown."

Find out more when Agents of SHIELD airs Tuesdays at 9 p.m. ET on ABC. Click the video below to see a preview for the series next episode.

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Marvel's Agents of S.H.I.E.L.D., Television, ABC, Marvel