Ep 22. Army of One

In Chicago PD season 4 episode 22, titled "Army of One," the Intelligence Unit of the Chicago Police Department investigates a series of bombings in the city.

The episode opens with Detective Lindsay (played by Sophia Bush) working out at the gym, where she receives a phone call from her father warning her about the bombings. Later on, the team gets a case and heads to the scene of the first bombing, where they find evidence that links the attack to a military man who was dishonorably discharged.

The team quickly identifies the suspect as a military veteran named Derek, who has a grudge against the government. Derek is also revealed to be a member of a group that believes in a single, powerful government, and they seek to bring down the current system.

As the episode progresses, the team follows up on leads and tries to track Derek down before he causes any more damage. Along the way, they discover that there may be other members of the group, and they must race against time to stop them from carrying out their plans.

Meanwhile, Lindsay is struggling with personal issues, as her father's phone call has reminded her of her traumatic childhood and she is confronted by her past in a new way. She tries to keep her emotions in check as she works the case, but it becomes increasingly difficult as the team gets closer to Derek and his allies.

As the episode comes to a close, the team finally confronts Derek and is faced with a tough decision as they try to bring him to justice. The episode ends with an emotional scene that leaves the fate of one character unknown and sets up a cliffhanger for the season finale.

Overall, "Army of One" is an intense and gripping episode that keeps the audience on the edge of their seats. The show's trademark mix of action, suspense, and character development is on full display as the team races against time to stop the bombings and deal with the fallout from their personal lives. Fans of the show will not be disappointed by this thrilling installment.