This week: Moretti observes the flaws in patient care down in the ER, the writers go back to the custody battle well with Gates and Sarah, Ray ain't got no legs, Luka heads overseas, Frank is buying into the Homeland Security propaganda a bit too much, Pratt and Abby treat a kinkster who got beaten up by a confused guy, and Neela's outing to a peace rally turns violent.

This week: The ER reopens with the same old problems, Morris tries to convince Hope to stay longer at their expensive hotel, Larry has vastly overestimated how much Sam is into him, no one knows Ray (or what's left of him) is, Abby believes in the power of love and it leads to a tricky diagnosis, Mae Lee says goodbye to County, and Pratt argues about the realities of the ER with Stanley Tucci.

This week: Love is in the air as Luka surprises Abby with a wedding, Gates and Ray's fight for Neela's affections comes to a violent end (in more ways than one), Timmy tries to hook up with every single nurse, Morris and Hope finally seal the deal, and Neela gets kissed by some drunken individuals.

This week: The staff scramble to empty the ER after a temporary closure is announced by Luka, Chaz's initiation into the paramedic crew goes horribly wrong, Sam helps guide Diana through the last choices of her life, Gates gets into a fist fight with his dad, and Pratt and Ray treat a teenager who has been poisoned by a jealous classmate.

This week: Pratt reconnects with Chaz who is pursuing a new career, Sarah is trying to get the Gates household in order, Abby is a bit paranoid about Baby Joe's fever, A flower delivery man crashes his van while attempting to save a pair of brothers, Luka and Gates do everything they can for an elderly man with Alzheimer's after his son dies suddenly, and Sam goes all She-Hulk on a cop.

This week: Neela's still getting shoved out of the way for Mae Lee, Gates has a talk with Sarah about her parentage, a wild new med student appears, Sam treats a dying man who is being constantly photographed, Luka and Abby try to calm Morris and Hope down about the upcoming wedding, Abby's favorite flight nurse has some surprising character development, and it's all hands on deck after a semi truck plows into a compact car containing a family.

This week: Hope's wedding senses are tingling as Luka and Abby begin to plan the big day, Pratt connects to a patient who was shot while trying to stop his son from killing someone else, Neela has some new competition in the form of a special med student, Gates has some daddy issues, and the entire ER does their best to help a hypothermic family whose car was trapped in the snow for two days.

Content warning: patient suicide

This week: Gates treats a dying woman whose story isn't quite lining up, Luka dives back into work, Neela uncovers a major ethical problem with a kidney transplant, Crenshaw is a sub, Ray treats a beaten cheerleader, and Andy Dick can see the future.

But pacing isn't, apparently.

Content warning: Discussion of two suicides.

This week: Chaos unfolds around Chicago as Tony tries desperately to save Meg's life after she overdoses, Pratt eventually gets out of jail but is surprised to see who bailed him out, flames engulf the entirety of Sam's apartment building, and Ames kidnaps Kovac and severely injures him while going on a stroll down memory lane.