Ep 17. Remember the Devil

In Chicago PD season 4 episode 17, titled "Remember the Devil", the Intelligence Unit is investigating a murder case that turns out to be connected to one of Erin Lindsay's old cases. She is forced to revisit her past when the victim is linked to a man she helped put behind bars years ago. As the team dives deeper into the case, they uncover a tangled web of secrets, lies, and betrayals.

Detective Lindsay must confront her past mistakes and the consequences they have on the present. She finds herself struggling with guilt and regret, as she realizes that her actions had far-reaching consequences that she never anticipated. The case is particularly difficult for Lindsay, who is still coping with the loss of her mother and the departure of her ex-boyfriend Jay Halstead.

Meanwhile, Voight and the rest of the Intelligence Unit work tirelessly to bring the killer to justice. They discover that the victim was involved in illegal activities, which may have led to his murder. The team follows the clues and tracks down the people involved, while facing various challenges along the way.

As the investigation progresses, tensions rise within the team as they struggle to balance their professional duties with their personal feelings. Ruzek's loyalty is tested when his father, who is involved in the case, asks him to help cover up a crime. Burgess faces a difficult decision when her boyfriend becomes a suspect in the murder.

The case leads the team to a shocking discovery that will change everything they thought they knew about the case. They must work together to piece together the evidence and find the killer before it's too late.

"Remember the Devil" is an intense and emotional episode that explores the complexities of relationships, loyalty, and the consequences of our actions. The show continues to deliver suspenseful plot twists and well-developed characters that keep viewers on the edge of their seats. It masterfully balances the personal lives of the characters with the intricacies of the case, providing a well-rounded and engaging story.