Clear your Tuesday night schedules; Agents of SHIELD's season 4 premiere is on the books.

Coulson (Clark Gregg) and Co. will jump to a new time slot this fall, kicking off their fourth season at 10 p.m. ET on Sept. 20. The new time puts the series out of reach of youngsters, although it remains to be seen if Marvel will capitalize on the late hour.

"I think it's great. I think we've got progressively darker each season and it's great to be able to push those boundaries a little bit," Elizabeth Henstridge (Simmons) told Digital Spy at MCM Comic Con in May. "I think the writers are excited, because they'll be able to maybe get a little bit sexy... throw in some good swearing!"

After the events of the "Ascension" time jump, there's any number of characters who would like to spew a few choice words. When season 4 begins, Coulson will no longer be the Director, Quake's (Chloe Bennet) lone wolf act will put the National Guard on her tail, and, if the following teaser from the series' Twitter is any indication, Hellfire (Axel Whitehead) could become a serious problem.

Could this mean that James is set to become the next big bad, or will he actually prove to be a boon to SHIELD? Or, as some fans have suggested, is Agents of SHIELD planning on brining Ghost Rider into the fold?

For now, viewers can only guess. The Marvel powers that be are keeping mum on the subject.

"What we have is an extraordinary library," executive producer Jeoh Loeb told Entertainment Weekly. "The idea is to be able to find out who that's going to be and make that person work within the story that we have."

Find out more when Agents of SHIELD returns this fall. Click the video below to get a look at the finale's six-month time jump.

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