A quiet shift goes awry when Nick and Ben are first responders to what turns out to be the worst call of their careers.
In the aftermath of the school shooting, the squad copes with the trauma as it affects them in ways they never expected.
After the arrest of a misunderstood homeless man and the retrieval of a runaway, Nick and Ben realize that not everyone can be saved.
Nick and Ben draw the squad into a simmering feud with a squad of firemen. Small mistakes have permanent consequences.
Amelie takes a chance on Ben, while Nick and Isabelle receive shocking news about Theo.
The hunt for the mole takes a dramatic shift when Nick is pulled off patrol. J.M. & Audrey form an uneasy partnership when paired together.
Housing evictions pit the squad against a community; Nick takes matters into his own hands when the mole investigation hits a wall.
After an accidental death, violent protesters occupy an abandoned building and the squad must clear them out.
Ben and Nick are called in for questioning in the murder of a pedophile and the true identity of the mole is revealed.
With the mole on the run, the devastated squad turn on each other; Nick finally tells Ben the full truth about what he and Kaz have done.