‘Chicago Med’ Episode 200 Trailer Reveals Will’s Entrance — Boss Previews His Return (PHOTOS)

Chicago Med is celebrating quite the milestone with its Wednesday, October 8, installment: its 200th episode. And what better way to do so than with the return of an OG. Nick Gehlfuss is back as Dr. Will Halstead, though he’s not in the Windy City to operate in a medical capacity — at least at first. He is back for multiple episodes, after all.

“It is a beautiful emotional episode, and that was what was always important to me, that it would be big emotion, not necessarily big set piece,” showrunner Allen MacDonald tells TV Insider. “And I always intended to bring back an OG Season 1 character. I shouldn’t even make it that vague. I always intended to bring Will back at some point. And then eventually, I realized that the best time to do that would be the 200th episode.”

Will is in Chicago to take Natalie’s (Torrey DeVitto) son, Owen, to a Bears game, and he comes to Gaffney to see old friends. (When Will left at the end of Season 8, he moved to Seattle and reunited with Natalie.) The promo, which you can watch above, reveals he surprises everyone by showing up carrying in a patient. (It’s reminding us of Colin Donnell‘s Connor making his entrance in the series premiere, after the train derailment.)

“What’s really fun about his return to Gaffney is that he gets to be reunited with Charles [Oliver Platt] and Goodwin [S. Epatha Merkerson], but also we get to see his dynamic with some of the newer characters like Lenox [Sarah Ramos] and Frost [Darren Barnet]. I love that,” MacDonald says. “And I can tell you as a spoiler that he and Frost get off on the wrong foot because Will is Will. And even though he is not a doctor at Gaffney, he certainly inserts his opinions. He’s not afraid to involve himself in a case even though he is not wearing a lab coat.” As for how long it takes before he puts on that white coat, the showrunner refuses to comment.

Considering he’s bringing Owen to a Bears game, Will and Natalie have to still be together. Beyond that, all MacDonald says is, “You will find out in dialogue where he stands with Natalie early on in the episode.” And while he shares, “I would love to have Torrey back ASAP, I wouldn’t get your hopes up” about her appearing alongside Gehlfuss during his return arc.

According to NBC’s official description of the 200th episode, “Things get personal when Ripley [Luke Mitchell] and Archer [Steven Weber] butt heads over the treatment plans tied to an unusual case. Asher [Jessy Schram] makes a surprising discovery with an expectant couple. A patient throws the hospital into chaos.”

There’s also likely to be some fallout from the reveal that Archer is the father of Asher’s baby.

Scroll down to check out the photos from the milestone 200th episode, as well as the cake celebration, then let us know what you’re hoping to see in it in the comments section.

Chicago Med, Wednesdays, 8/7c, NBC