Agents of SHIELD's Bobbi Morse has a secret, and the truth will come tumbling out during the second half of season 3.

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Mockingbird (Adrianne Palicki) has something up her sleeve, a mysterious plot that could either serve to bolster SHIELD or leave it in ruins. Bobbi's ex-husband was in the dark last time viewers saw the pair, but it seems Lance Hunter (Nick Blood) will soon be in the loop.

"I honestly think people are going to freak when they see some of the stuff we've been filming recently," Blood told Zap2It, explaining that Bobbie's secret will unravel across several episodes.

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However, Morse's and Mac's collusion isn't the only unknown in the SHIELD universe. Inhumans made their grand entrance in "What They Become," and unlike viewers, Blood informed Zap2It that Coulson (Clark Gregg) and Co. have no idea what these creatures are.

Do you think Bobbi's secrets are somehow tied up with the MCU's latest addition? Sound off in the comments below.

Find out more when Agents of SHIELD returns to ABC on March 3 at 9 p.m. ET. Click the video below to hear a sound bite from the midseason premiere, "Aftershocks."

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