Martin remembers his last days as a cop while on his way to his new job.

Axe and Wendy do some soul searching. Chuck suffers a devastating setback.

A sudden and mysterious disappearance sends both Axe and Chuck spinning.

Casualties of a disaster flood the ER, which is short-handed because everyone is at Dr. Carter’s going-away party because he’s leaving the ER after 11 years. Dr. Pratt looks for…

Dr. Banfield takes a run to clear her head but finds herself trying to rescue a three-year-old girl from drowning in a nearby lake. Gates tries to pull some strings…

Banfield is caught off guard when a man tries to steal her wallet; Dr. Dubenko returns to the surgery team; a family member is suspected of hurting a young gymnast;…

Aaron’s heritage and a widespread teachers’ strike become polarizing issues, and Wells discovers a sinister pattern in a flu outbreak.

A political attack on Kirkman puts privacy and transgender rights in the spotlight. Aaron weighs a major decision. Wells and Eli track a bioterrorist.

A heated debate over child marriage roils Kirkman’s staff. Opioid addiction hits home for Mars. A biohacker turns Wells onto a chilling new threat.

Now running for office for the first time, Kirkman and his nascent campaign stumble out of the gate. Wells gets a critical reassignment.

A sergeant makes Benson choose between loyalty and duty when his son is accused of rape.