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Sink or Swim
Episode number: 1
Overview: When a commuter ship capsizes, the ED finds itself under water as the staff struggles to treat the influx of new patients and deal with bold new employees taking charge.
Bite Your Tongue
Episode number: 2
Overview: Lenox continues to rankle Archer as the two tackle their new roles. Ripley faces possible suspension over what really happened to Pawel. Goodwin is forced to make layoffs.
Trust Fall
Episode number: 3
Overview: Asher treats a woman whose undiagnosed condition threatens the lives of both her and her unborn child. Goodwin receives a chilling message while battling the hospital higher-ups.
Blurred Lines
Episode number: 4
Overview: A familiar face returns to the ED. Ripley and Charles treat a woman with a rare disorder. Frost suspects that his patient's father is lying about his daughter's condition.
Bad Habits
Episode number: 5
Overview: Halloween chaos takes over the ED. Asher helps a pregnant woman with an autistic son. Charles clashes with Nurse Jackie on a psych case.
Forget Me Not
Episode number: 6
Overview: Chicago P.D. steps up Goodwin's security after she's threatened online by a former employee. Archer and Frost treat victims from a disciplinary camp injured during a rockslide. Maggie gets roped into delivering a high schooler's baby.
Family Matters
Episode number: 7
Overview: Ripley and Frost uncover shocking information that conflicts with their patient's DNR. Asher facilitates an unexpected reunion. The tension between Archer and Lenox comes to a head.
Love Will Tear Us Apart
Episode number: 8
Overview: Goodwin's troubles persist. Charles clashes with his former resident over a depressed patient. Lenox and Ripley treat a car accident victim who recently reunited with his college sweetheart.
No Love Lost
Episode number: 9
Overview: The team fights to save the life of one of their own. Frost and Abrams butt heads with their patient. Asher helps a religious young woman with an ectopic pregnancy.
Broken Hearts
Episode number: 10
Overview: An army of surgeons prepares to separate conjoined twins. Asher reconnects with someone from her past. Archer treats a tyrannical boss with a heart problem.
In the Trenches (II)
Episode number: 11
Overview: When a gas explosion rocks a high-rise, Chicago's first responders come out in force to rescue hundreds of civilians. It's the calamity beneath the surface, however, that sends our heroes on a race to save 40 people trapped deep underground, including two of their own. The crossover starts on Chicago Fire S13E11 In the Trenches (I). It continues on Chicago P.D. S12E11 In the Trenches (III).