Dept. Q episode 8 unravels the final knots of Merritt's haunting past, bringing the entire picture into focus. This isn't just another step in the investigation-this chapter is deeply personal.
It reveals who's been responsible for Merritt's years of pain and why. As the pieces finally come together, the impact of this episode on Department Q is devastating.
Carl follows the trail of names, but one stands out in Dept. Q Ep. 8
In Dept. Q episode 8, Carl's mind stays active even during sleep. He dreams of confronting Caroline Kerr and connecting her to Anderson, a crime boss named Eugene, and a behind-the-scenes operator named Charlie.

In this strange dream, Carl even pulls a gun, ending things in a way that only feels real until he wakes up. That strange sense of clarity sticks with him. Later, in waking life, he surprises Rachel by crashing her coffee meeting, revealing he's been tracking her location.
Though their interaction is small, it shows how far Carl is willing to go to stay ahead. Meanwhile, his work with Akram leads the team to a new understanding of Sam Haig's past. The more they learn, the clearer it becomes: the story Merritt told isn't missing details, but it's been hiding an entirely different version of the truth.
Merritt’s captivity ties back to one broken moment
In the eighth episode of Dept. Q, locked inside a hyperbaric chamber, Merritt finally understands what led her here. After four years of questioning what she did wrong, it all comes down to one memory. When she was a teenager, she confided in Harry Jennings about stealing one of her mother's rings to run away from home. She never intended for him to take any action.

But Harry took her words seriously. One night, he acted on them. Merritt found her brother William bloodied and the jewelry box open. It changed everything. What Merritt couldn't have predicted was that Harry's death would later lead to a cycle of revenge.
His mother, Ailsa, and his younger brother, Lyle, blamed her for it all. Lyle, posing as Sam Haig, had been close to Merritt. He loved her, impersonated someone she cared for, and turned her emotions into weapons against her. The quiet act of returning her necklace, the one from her mother, said it all.
His twisted love was not enough to undo the harm already done.
The identity switch that kept everyone guessing
The biggest shock lands when Dept. Q discovers that there are two men claiming to be Sam Haig. One, the real investigative reporter, had died under suspicious circumstances. The other, Merritt's "Sam," was Lyle Jennings. It's not just a clever disguise. It's personal.

Lyle was once hurt by the real Sam in their youth, and he grew up learning how to wear masks both emotionally and literally. That makes him the perfect ghost in the machine. Terry Dundee at Godhaven remembers Sam's manipulative nature, and Carl finally recognizes that Lyle's impersonation wasn't just a lucky guess, but something built on shared pain and practiced charm. Merritt, realizing the man she once loved was her captor, doesn't back down.
Instead, she speaks the truth, prepared for whatever comes next. That strength finally breaks the silence around her story.
Episode 8 of Dept. Q not only advances the mystery but also exposes it completely. Merritt's past becomes the crucial missing piece, and Carl's persistence guides the team to the truth. With each layer uncovered, the show delivers not just answers but genuine emotional depth.