In Season 9 of Chicago P.D., one of the most dangerous undercover cases the Intelligence Unit ever faced came with a twist no one saw coming—because it came from inside the team.
When Ruzek went deep undercover with a notorious gun-running crew, it felt like familiar territory. But as the mission dragged on, the lines between loyalty and survival blurred. The crew leader, Dante Torres, began to suspect a mole. Tensions built.
Then came the bombshell: Torres wasn’t the only one watching.
Voight had planted someone else on the case. Not just watching the gang—but watching Ruzek.
Why? Because Voight suspected that Ruzek might go rogue. “He’s too close to the edge,” Voight said offhandedly in a now-infamous deleted scene.
When Ruzek discovered the second mole—another officer secretly feeding intel to Voight—the betrayal was explosive. He confronted Voight in a nighttime scene that’s become one of the most iconic of the season.
“You sent someone to spy on me?” Ruzek growled. “After everything?”
Voight’s response was chilling: “I needed to know who you were when no one was watching.”
The storyline caused major fallout in the Intelligence Unit. Burgess sided with Ruzek. Halstead questioned Voight’s methods. And fans? They were divided. Some called it necessary. Others saw it as proof that Voight would sacrifice anyone—even family—for control.
The arc redefined trust in Chicago P.D. And in a show built on loyalty, it proved the most dangerous betrayal isn’t from the enemy—it’s from within
