It looks like Sam Winchester's Band-Aid angel will be showing his true colors as disputes between the Earth-bound fallen angels heat up during "Holy Terror."

Dean Winchester (Jensen Ackles) was loath to allow an angel to possess his younger brother, but the older hunter has a reputation for taking tremendous risks when it comes to keeping Sammy (Jared Padalecki) up and running. Although Ezekiel claims to be healing his vessel and himself, Dean has no way to know if that's true or not.

A new preview for Supernatural's midseason finale shows that our little buddy Zeke will use his powers against his only ally. With Sam's health on the line, how long will it be before Dean takes the plunge and admits the truth to his brother?

"It is starting to drive [Dean] a bit crazy and it gets to a point where it actually backfires on him," Ackles told TV Guide. "In some way, shape or form, it's going to explode and the ugly truth will rear its head. At this point it's a battle that he is very begrudgingly having the fight."

Despite the apparent upcoming problems between Ezekiel and Dean, Padalecki says the two will begin to bond after Dean discovers the heavenly beings true motivations for helping Sam.

"I think it's because Dean was so obviously and apparently vulnerable to Ezekiel. He had to basically say, 'Listen, fine. Just do whatever. Save my brother,'" Padalecki said of the growing comfort level between the two. "So Ezekiel's seen Dean's Achilles Heel."

Click the video below to see a preview for "Holy Terror."

Is Zeke good or evil? Find out more on Supernatural, which airs Tuesdays at 9 p.m. ET on the CW.

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Supernatural, The cw, Television