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Control Resonant – Into the Valley of Death Side Story Walkthrough

Into the Valley of Death is a side quest in Control Resonant that starts with Langston at the Central Field Office after the Enemy of My Enemy story quest. His cat Alfred is missing, and you have to follow the trail from his apartment through the Sinkhole and deal with Maria. This walkthrough covers how to start the side story, every step through the Sinkhole and the reward you get for finishing it.

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Control Resonant Game Guides & Collectibles Hub


Location: Central Field Office
Description: “Langston needs help with a mission that is clearly very important to him. Something about his apartment?”

Talk to Pope after the Enemy of My Enemy story quest, and she will tell you that Langston needs help. Then go to the Central Field Office and talk to Langston. He gives Dylan Langston’s Apartment Key.

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Langston at the Central Field Office starting the Into the Valley of Death side story in Control Resonant › camzillasmom.com

Location: Sinkhole

You reach the Sinkhole through a checkpoint inside a laundromat.

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› camzillasmom.com

Inside the Sinkhole, follow the ropes down to a platform labelled Personnel Access and follow the yellow line inside.

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On the other side, look up and head to where the light is flickering. An Important Person marker also shows up on your HUD. Reach it and talk to Ranger Dombrow.

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› camzillasmom.com

Keep following the yellow line until it ends next to a dead FBC agent.

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› camzillasmom.com

Continue until you see the passage marked with the number five, which leads to Langston’s apartment. Enter and interact with the feeder to talk to Langston.

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Feeder in Langstons apartment in the Sinkhole in the Into the Valley of Death side story in Control Resonant › camzillasmom.com

Location: Langston’s Apartment, Sinkhole

Report the scratch marks on the wall and the blood on the floor.

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› camzillasmom.com

Pick up the feeder and take it to the carrier. Then pick up the carrier to start the search for Alfred.

Cat carrier in Langstons apartment in the Into the Valley of Death side story in Control Resonant › camzillasmom.com

Location: Sinkhole

Report the first knocked-over plant to Langston. Then keep following the knocked-over plants and the scratch marks on the walls. The trail leads past Ranger Dombrow to a room with a double bed and white sheets.

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Room with a double bed and white sheets in the Into the Valley of Death side story in Control Resonant › camzillasmom.com

Location: Sinkhole

Now you have to find a bedroom where the TV is switched on. Stand with your back to Ranger Dombrow and his TV, and look across the chasm. On the same level, there is a flicker in the corner. Jump across to find a room with a bed and a TV that is switched on, and place the carrier on the bed.

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› camzillasmom.com

Interact with the keyboard in the bedroom, then carry the four plants out of the room one by one. When you return to the bedroom, Langston tells Dylan to disappear. Go back a couple of rooms until Langston calls you back, then pick up the carrier.

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Carrying one of the four plants out of the bedroom in the Into the Valley of Death side story in Control Resonant › camzillasmom.com

Location: Sinkhole

Return to Ranger Dombrow on the other side of the chasm. He is dead. Report it to Langston.

Ranger Dombrow dead next to the flickering TV in the Into the Valley of Death side story in Control Resonant › camzillasmom.com

Location: Sinkhole

Look down the chasm and you will spot more blood at the bottom. If you get lost, Langston and Alfred give you directions. Drop down, then keep going down through the square hole in the floor. Follow the blood to a red glowing rift in the wall.

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› camzillasmom.com

As soon as you get closer, Dylan drops the carrier and you have to fight Maria. After the fight, pick up the carrier again and take it to the red glowing crack. Put the carrier down on the spot right below the crack.

Alfred then disappears, and you can call him to each window. Maria moves between the windows in a set pattern, and the window she is at glows red. Call Alfred to that window just before Maria arrives. Do this several times to chase Maria out of the windows and defeat her again.

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Once Maria is defeated for good, pick up the carrier and climb back up to Ranger Dombrow’s body next to the flickering TV. Put the carrier down there.

Alfred in the carrier next to the body of Ranger Dombrow in the Into the Valley of Death side story in Control Resonant › camzillasmom.com

What If You Fall and Drop the Carrier Halfway

This happened to me, and I spent 10 minutes looking for the carrier in this disorientating place. If it happens to you, the quickest fix is to return to the title menu and reload a recent save. Select Load -> Open to get a list of saves to choose from.

The side story is complete and you receive an Artifact.

Artifact: Untapped Catnip Toy
Effect: + Survival, significantly reduces damage from falling into the void.

Untapped Catnip Toy Artifact reward from the Into the Valley of Death side story in Control Resonant › camzillasmom.com
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Camzillasmom Collectibles Hunter
It all began in the ’80s when I was just 7 years old. Starting with basic arcade games, I soon delved into titles like Loom and Monkey Island by Lucasarts. Throughout the years, as I indulged in more and more games, I consistently sought clear guides to swiftly navigate my gameplay. Now, it’s my turn to contribute back to the community.

About Control Resonant

Sequel to: Control (2019)
Release: September 24th, 2026
Developer: Remedy Entertainment
Publisher: Remedy Entertainment
Official Website: https://www.remedygames.com/