There's a new monster in the Agents of SHIELD world.

'Agents Of SHIELD' Season 3 Spoilers: Is FitzSimmons Doomed? Elizabeth Hesntridge Says 'Get The Tissues Ready'

A alleged bringer of death and insanity (and sandstorms), the unidentified baddie of Simmons' (Elizabeth Henstridge) nightmarish vacay won't disappear anytime soon. He/she/it may be trapped across the universe, but his identity will have serious ramifications as season 2 continues.

"We'll learn more about that," Henstridge informed Entertainment Weekly. "It will have an impact going forward."

'The Flash' Season 2: Meet Hawkgirl [PHOTOS]; Ciara Renee Spills On Kendra's Debut

Will (Dillon Casey) survived his last round with the bringer of doom, but the simple act of being alive may not signal victory. In a Stygian world, the cloaked evil manages to bring darkness inside its victim's minds. Could Will have succumbed to an invisible wound?

"That's always a possibility. It's definitely a worry," Henstridge warned. "We've seen in the episode that Will hints that it drives people insane. We don't know if the Will that we could get back is the same guy."

Before Agents of SHIELD can address Will's state, however, a strained Fitz (Iain De Caestecker) and Simmons will have to recreate the decimated portal. Find out if they can 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, "Among Us Hide..."