Will Halstead returns to Med to help Goodwin with a secret investigation. Archer and Charles deal with twins who insist on being identical inside and out. Stevie and Dylan treat a young patient with sickle cell anemia.

Vanessa and Archer disagree on how to handle the victim of a motorcycle accident. Dylan and Charles deal with a UNICEF negotiator with repressed trauma. Stevie and Will treat a high schooler with Addison's disease and a clingy mother.

Dylan and Will deal with a dishonest patient whose lupus is in remission. A wealthy donor makes inappropriate advances toward Stevie. Vanessa, Crockett and Charles try to convince a young woman to have life-saving surgery.

Charles helps Dylan with a longtime patient who was recently diagnosed with schizophrenia. Stevie, Maggie and Vanessa investigate the legitimacy of a patient’s cancer diagnosis. Crockett is caught off-guard. Will pitches a new medical technology.

Dylan and Charles treat patients suffering from Glass Child Syndrome and misdiagnosed ADHD. Crockett has to navigate hospital politics when he cares for the daughter of a transplant surgeon. Will and Stevie must lay egos aside to help save an elderly patient.

Stevie’s personal and professional worlds collide when her mother becomes her patient. Dylan’s history with the father of a patient interferes with his perception of a case. Crockett's allegiances are challenged when his patient's liver is a potential match for one of Dr. Blake's patients.

Crockett helps Dr. Blake replace a patient’s liver. Vanessa tries to prove herself. Will continues to pursue the truth about Cooper. Ethan gets closer to returning to life in the E.D.

Dylan's loyalty to Med and the police department is challenged when an old family friend and veteran cop exhibits concerning behavior. The annual random drug testing puts a doctor’s career in jeopardy. Ethan tries a risky old-school method on a patient. Will helps Stevie search for her mother.

The outcome of Will's investigation weighs heavily on his mind as he works with Dylan to save a 4-month-old patient. Stevie and Vanessa both struggle to keep their secrets. Crockett and Blake work with Abrams to save a patient in need of a liver transplant.

In the aftermath of the Vas-COM scandal, Goodwin clashes with the hospital’s new compliance officer. Crockett and Blake try to save a patient who has a son with severe autism. A patient’s son lies to his father about his diagnosis.

Crockett and Blake clash with Randall when a famous alcoholic football player needs a liver transplant. Dylan is reluctantly reunited with old friends when their son breaks his arm. Stevie and Charles work together when a patient falls ill after back-alley plastic surgery.

Will and Stevie get stuck in the middle of a marital face-off. Dr. Blake's entire surgical team mysteriously collapses during a liver transplant. Charles encourages Ethan to reconcile with his father.

Scott and Archer diagnose a pregnant woman with a serious infection. Maggie receives shocking news. Halstead and Charles question an elderly patient’s Alzheimer’s diagnosis. In an effort to help a patient, Marcel takes a risk.

Goodwin assigns Med’s new compliance officer to a patient with a long-hauler COVID condition. Maggie helps Halstead treat a patient who's been in an iron lung for 60 years.

Scott suspects his patient may be a drug dealer. Halstead must decide how to spend his whistleblower settlement. Charles and Taylor help a patient who believes she's infested with parasites. Marcel and Blake are paired with an arrogant surgeon.

Halstead helps a patient with long-haul COVID-19 symptoms. Taylor reflects on her dating life when she learns that a patient's daughter is having an arranged marriage.

Rival gangs bring their war to Med. Halstead and Charles work with a brain cancer patient who's refusing treatment. Tensions run high in the OR when a patient's transplanted uterus fails.

Archer and Asher clash over a patient with close ties to Goodwin. After a patient is shot during a home invasion, Scott and Marcel help with the investigation. Maggie and Halstead work to protect a patient who is in the country illegally.

Halstead and Asher work to save a surrogate's baby. Charles cares for a patient on a hunger strike. Choi and Archer help a patient with ties to Choi's late father. Scott and Maggie are stumped by a drunk patient who claims to be sober.

Scott helps the daughter of a mob boss. A grandmother comes to Med desperate to save her grandson. Choi struggles with some shocking news about his father.

Dylan and Ethan treat a patient shot during a drug raid. Charles and Vanessa work together to properly diagnose a motivational speaker. Will and Hannah must turn to Crockett for help with a patient who's pregnant.

Halstead and Asher clash over a patient in need of a kidney transplant. Marcel faces a tough decision when Blake is in surgery. Choi and Archer treat the son of Med's general counsel. Med's family grows.

In the aftermath of Halstead's apartment fire, Marcel, Choi and Archer work together to try to save the survivors. Charles and Med's new fellow, Cuevas, help a paranoid patient.

Supply chain disruptions dramatically impact Med, causing Marcel to clash with other doctors. Maggie reveals something to Ben. Choi and Archer help a patient with ALS.

Charles and Cuevas clash over the treatment of a paranoid patient. Choi treats a pregnant patient from Asher's past. Marcel and Taylor help a man who needs a risky neurosurgery.

When a subway train goes off the tracks, Marcel volunteers to help the victims. Taylor and Halstead must decide if they’re willing to risk their jobs to save a patient. Asher and Archer clash over a pregnant patient.

The effects of the supply chain shortages continue to impact the ED when Taylor's drug dealer reappears. One of the victims of the recent train crash needs a transplant.

Marcel adjusts to his newfound fame when he helps Halstead treat a local restaurant owner. Choi, Charles and Goodwin aid a new mother worried about hurting her baby. Maggie and Taylor clash with a patient eager to get back to work.

Med runs out of scrubs, forcing the staff to improvise. The life of Archer’s son is in danger. Marcel and Charles help a kidney transplant patient experiencing psychosis. Asher and Halstead grow closer.

Halstead and Marcel facilitate a trans-organ exchange. Asher and Cuevas help a sexual assault survivor. Choi and Archer treat a patient whose case could expose a fraudulent doctor.

Halstead relies on Marcel and Med's newly donated OR 2.0 to save his patient. Charles helps an elderly, confused patient who's mourning the loss of his high school sweetheart. As their wedding day approaches, Choi and April run into some roadblocks.

Charles and Cuevas help an elderly patient and her developmentally disabled grandson. Halstead treats a swimmer with a heart condition. Marcel considers using the OR 2.0 for surgery.

Marcel and Charles treat Lieu's gym buddy. Maggie and Halstead help a robbery-homicide suspect. Asher and Archer use Med's new opiate abuse AI program.

Goodwin, Maggie and Marcel help victims of a hit-and-run accident. Halstead struggles to diagnose a patient with seizures. Asher and Archer clash with Jack Dayton.

A brutal storm rocks Chicago. Halstead encourages Dr. Grace Song to go against her own findings for the benefit of their patient. Asher rushes to the hospital to help Archer's pregnant patient. Maggie's concern for Ben consumes her.

Goodwin and Charles clash as negotiations drag on between the administration and the custodial workers' union. Asher fights to keep a mother and her newborn baby together.

The hospital is in disarray when the janitors go on strike. Marcel treats a young girl injured on her family's farm. Charles and Cuevas' schizophrenic patient returns to Med.

Halstead and Cuevas struggle to diagnose a patient with a rare disorder. CFD and Med staff work to free a paranoid father trapped in the MRI suite. Tanaka-Reed gets an ego check.

A documentary crew visits Med to film Marcel and Abrams' groundbreaking surgery. Archer refuses to ask for help for his kidney issues despite the staff's unrelenting kindness.

Dr. Song launches her pilot program, giving the E.D. a technological facelift. Archer clashes with Charles on a patient faking paralysis. Archer helps a pregnant mother with a heart condition.

The fate of the hospital rests on the vote of an incapacitated board member. Archer helps a mother with a rare stem cell disease while Asher treats the woman's pregnant daughter. Charles encounters a schizophrenic patient with a hearing impairment.

Maggie clashes with Charles over a distrustful patient. Marcel and Halstead fight against Med's new policies. Asher and Archer pull surprising things out of their unsuspecting patients.

As Jack Dayton prepares to launch OR 2.0's IPO, Marcel and Grace search for data that may put a wrench in his plans. Charles helps a schizophrenic patient who is anxious about prom. Asher clashes with Abrams when his wife becomes her patient.

Shocking information threatens Jack Dayton's surgery and the future of OR 2.0. Archer goes rogue to save a patient in need. Maggie questions her future at Med.