In the latest episode of Marvel's "Agents of SHIELD", titled "Among Us Hide...", it seems the Advanced Threat Containment Unit (ATCU) is keeping some big secrets from Coulson.

CLICK HERE to watch what the ATCU members are hiding from Coulson and how it will affect his position.

According to the synopsis of the episode, "The stakes get even higher as Hunter and May continue to go after Ward and Hydra, and Daisy and Coulson begin to suspect that the ATCU may be keeping a big secret from S.H.I.E.L.D."

It seems from the promo of the episode that Coulson suspects the ATCU members are up to something about which he has no idea. He can't ignore the fact that of late, the ATCU members are behaving with him in a queer manner.

There is a possibility that one of them may be revealed as a Hydra agent and though there is no official confirmation yet, the way the ATCU is acting, there is indeed something odd going on.

Meanwhile, Hunter and May continue to find the whereabouts of other members of Hydra. Though they have been trying their best to round up all the other Hydra members, it seems the operation is not working well and may very soon get dissolved by SHIELD.

Earlier, we had reported that after her dramatic rescue from another planet, Agent Simmons was still reeling from her ordeal, and revealed how she had to fight for her life in the harsh new world.

Simmons had been stuck on the mysterious planet for quite a long time, and even though she was back on Earth, it seemed something on the planet had affected her significantly and she was finding it hard to recover.

Though she is not present in the upcoming episode, her encounter with the planet and its strange creatures will surely be a central theme in one of the future episodes.