Chicago Fire promo sheds light on why Severide returned to the 51

Kelly Severide (Taylor Kinney) may be on thin ice. The character is back in action on Chicago Fire, and seemingly as involved as ever, but the new One Chicago promo hints at some complications between him and his wife, Stella Kidd (Miranda Rae Mayo).

While the specific circumstances of his return have been kept under wraps, the new promo drops some major revelations. There's a quick glimpse of a conversation between Severide and Kidd, and the latter basically confirms that Severide was reluctant to come back to the 51.

Kidd had to 'force' Severide to return to Chicago Fire

"I basically had to fly to Alabama, put you in handcuffs, and drag you home," Kidd can be seen telling a humbled Severide. It's pretty surprising to hear, even when one considers the firefighter's actions at the end of season 11.

For those who don't recall, Severide made a last minute decision to go out of town and attend an arson investigation program. It seemed like a pretty straightforward trip, but Severide wound up staying longer than was initially planned, and while Kidd passed it off as there being more to the program than she thought, the truth is that Severide completed the programs weeks earlier.

Related: Chicago Fire teases character death in season 12

As revealed by Cruz (Joe Minoso), Severide had left the site of the training program, Alabama, and was actually solving cases throughout the country with the ATF. Given Severide's gift for detective work, especially as it pertains to arson, we can understand why he jumped at the opportunity. That said, keeping the decision from his spouse was not a great call.

Severide assures Kidd that they're in season 12 'together'

There's plenty to suggest that Severide and Kidd patch things up over the course of season 12, including a moment in which they kiss, but it's obvious that Severide has some ground to make up with his wife after keeping her in the dark for what seemed like weeks.

The exchange that follows Kidd's bombshell revelation is more encouraging, for both the couple and the fans. "I'm here," Severide assures his wife. "We're in this together." We can only hope that Severide sticks around for the long haul this time, and that the couple continue to lead the 51 into the future.