Chicago Med season 4, episode 7 recap: The Poison Inside Us

CHICAGO MED -- "The Poison Inside Us" Episode 407 -- Pictured: (l-r) Yaya DaCosta as April Sexton, Brian Tee as Dr. Ethan Choi -- (Photo by: Elizabeth Sisson/NBC)
CHICAGO MED -- "The Poison Inside Us" Episode 407 -- Pictured: (l-r) Yaya DaCosta as April Sexton, Brian Tee as Dr. Ethan Choi -- (Photo by: Elizabeth Sisson/NBC) /

Chicago Med called in the whole One Chicago universe this week for a chaotic episode. Here’s what happened in Chicago Med season 4, episode 7.

This week’s Chicago Med felt like a One Chicago crossover unto itself. And that’s before it threw fans a curveball by bringing back a character from Chicago Med season 1.

“The Poison Inside Us” opened with Dr. Will Halstead (Nick Gehlfuss) getting called out to help his old friend slash task force target Ray Price. Will convinced Ray to come to the hospital, while Emily Choi (recurring guest star Arden Cho) really was headed to Las Vegas.

Though Dr. Ethan Choi (Brian Tee) still sounded as unenthused as Ray, he didn’t stop his sister and her boyfriend from taking off. Though he did appear very uncomfortable about it; not like he hasn’t got plenty of reasons.

With Emily out of the way, Maggie Lockwood (Marlyne Barrett) assumed that Choi and ex April Sexton (Yaya DaCosta) would get back together. April said no, while also having no idea that Choi was walking into a treatment room with an unhinged man.

More from One Chicago Center

And that the unhinged man was holding toxic chemicals, determined to get revenge for the death of his wife a year before.

But hey, just as we got interested in that tense moment, Chicago Med shifted over to Dr. Connor Rhodes (Colin Donnell) finding out that his father (guest star D.W. Moffett) had just become a hospital board member.

When he asked why, Gwen Garrett (recurring guest star Heather Headley) let slip who funded the hybrid OR, and Connor was livid.

Especially when the look on Dr. Ava Bekker’s (Norma Kuhling) face told him she knew—although he still wasn’t aware that she was the reason why. She tried to talk him out of being angry, but he didn’t want to hear it.

"Connor: You should know me well enough to know that I don’t want to be beholden to my father."

April walked into Choi’s treatment room and was immediately told to leave—which tipped her and Maggie off that there was something very wrong. Speaking of wrong, Will had Ray in for his MRI while the FBI made very clear that they wanted him out of the hospital quickly in order to crash his bridge game (read: meeting of criminals).

And with Will busy, Dr. Natalie Manning (Torrey DeVitto) and Dr. Daniel Charles (Oliver Platt) were teamed up to treat a pregnant woman who was also manic. Natalie made the decision that it was time to deliver the baby.

Choi tried to subdue the angry man by tackling him, but the container of chemicals spilled in the ED anyway and forced an immediate evacuation—of almost everyone, because Connor decided he and Ava were going to seal the hybrid OR and hold their position. And Natalie, Charles and the pregnant woman were stuck in the elevator.

This was going to end badly for someone. The question was who?

Most of the hospital poured into the parking lot, under decontamination sprinklers and with some friends from both Chicago Fire and Chicago PD. Chief Wallace Boden (Eamonn Walker) had squad working on cleaning up the ED, while Hailey Upton (Tracy Spiridakos) was on hand to start looking into the chemicals themselves.

And Will was being threatened by Ray’s belligerent kids again, before Choi’s collapse made it clear there were bigger things than Ray Price to worry about.

Watch One Chicago on fuboTV: Watch over 67 live sports and entertainment channels with a 7-day FREE trial!

With the limited amount of resources available, Will had to break the news that there was only one dose of necessary drugs left and since the disgruntled widower was in worse condition, it was going to him.

Will tried to come up with a Plan B, but April wasn’t satisfied and decided to run into the hospital herself, unprotected, to get what they needed. Luckily, she came out okay, though you’d think she should’ve suffered some consequences if the chemical spill was really that bad.

Meanwhile, no one left in the hospital could agree on treatment for their quarantined patients. Ava was still getting the cold shoulder from Connor, and Natalie didn’t want to do an improv C-section, but finally agreed after Charles got a specialist on the phone (just barely) to give her directions.

Unsurprisingly, Chicago Med had Natalie ultimately having to make her own decision about the C-section. She and Dr. Charles were able to deliver the baby with only minor complications. Well, that kid is going to have a story to tell for the rest of his life.

The Connor vs. Ava battle came to a head with Ava deciding that she was going to be the blood donor for their patient (even though it made her briefly lose consciousness), while Jay Halstead (Jesse Lee Soffer) showed up to lecture his brother about ruining the FBI’s plans. Um, Jay, you could at least ask Will how he’s doing first, if only just to be polite.

The final act of “The Poison Inside Us” saw the man who started this whole thing ultimately die, just as everyone found out that what he’d spilled was cyanide. What did that mean for Choi?

As Chicago Med re-opened the Emergency Department, Natalie found out that Charles had never actually called for help in the first place—he’d been the one talking her through the C-section. She accused him of manipulating her, but quieted down when she saw her patient and the newborn baby sleeping peacefully.

"Charles: You saw the woman, not the mental illness. You have excellent instincts, Nat. Just gotta trust them."

Connor and Ava’s patient would be fine, too, while Connor went to check on Ava in her own room recovering from her impromptu blood donation. In her post-donation haze, Ava let slip that she’d approached his dad about the money because she didn’t want to lose him. So this big, explosive secret between them wound up being something Chicago Med swept under the rug with a kiss. Okay then.

And Choi seemed to be improving, and April realized she was still in love with him, but Will started coughing up blood. He had an ulcer, from all that stress of lying to his fiancee and arguing with the FBI. Not that he’d admit any of that to Natalie. Everything is not fine, Will!

Plus, Choi’s ex Vicki Glass (a returning Cynthia Addai-Robinson, Arrow) was still his emergency contact. It was nice of her to show up, but Chicago Med fans knew that wouldn’t go over well with April, just as she was running to be at Choi’s side. So much for a happy ending.

dark. Next. Chicago Med casts someone close to Natalie

For the latest Chicago Med season 4 spoilers and news, plus more on the entire series, follow the Chicago Med category at One Chicago Center.