Kingdom Come Deliverance 2: Who is the Serial Killer in the Fifth Commandment Quest?

Side quests in Kingdom Come Deliverance 2 are a fantastic blend of suspense, drama, and even some laugh-out-loud moments. While some of these quests tie directly into the main story and deepen your connection to key characters, others offer unique opportunities to build relationships in meaningful ways.

The Fifth Commandment side quest in Kingdom Come Deliverance 2 sees Henry team up with Katherine to track down a ruthless serial killer terrorizing the town of Kuttenberg, with the goal of uncovering the murderer’s identity. In this guide, we’ll reveal the killer so you can complete the side quest.

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Who is the Murderer in the Fifth Commandment Side Quest of Kingdom Come Deliverance 2? (Spoiler Alert)

During the Fifth Commandment side quest in Kingdom Come Deliverance 2, after gathering all the clues, Henry is faced with a critical decision: identifying the mass murderer. You’re presented with three suspects—Prokop, Williams, and Von Grolles. To progress correctly, skip accusing Prokop and Williams, and instead point the finger at Von Grolles as the prime suspect.

What Happens After You Suspect Von Grolles as the Serial Killer?

Once you’ve accused Von Grolles, your next task is to infiltrate the Von Grolles residence and search the young Von Grolles’ room. To find the room, head to the first door at the top of the stairs on the first floor.

Inside, you’ll discover two locked chests. Pick the locks to uncover women’s clothing and trophies taken from the victims—key evidence linking Von Grolles to the crimes.

If lockpicking proves challenging, don’t worry. There’s an alternative: look for a key for the chest lying on the floor. It’s on the other side of the bed (from the chest) near some clothes on the floor. This makes the process much easier if you strugge with the lockpicking mechanic.

The quest then takes an exciting turn as Katherine volunteers to act as bait, setting a trap to catch the killer. Once the plan is in motion, a cutscene plays out, revealing the shocking truth: Mandelina von Grolles and her servant Thaddeus are the real killers behind the murders in Kingdom Come Deliverance 2.

How to Get the Fifth Commandment Side Quest in Kingdom Come Deliverance 2?

You can unlock The Fifth Commandment side quest by speaking with Katherine after completing the main quest “Into the Underworld.” To start, head to the Hangman’s Halter Tavern and strike up a conversation with her.

When talking to Katherine, choose the dialogue option, “You wanted some help with something?” This will prompt her to share more details about the quest, officially triggering it and setting you on the path to uncovering the mystery.

Keep in mind that this side quest has multiple possible outcomes, depending on who you ultimately accuse of being the serial killer. Your choices will shape how the story unfolds, so choose wisely!

Rewards for Completing the Fifth Commandment

After successfully finding out the serial killer in the Fifth Commandment side quest in Kingdom Come Deliverance 2, you will get the following rewards:

• 150 x Groschen
• 1x Kuttenberg Knight shield

The Fifth Commandment is one of the longest side quests in the game and the rewards you get are not worth the time and effort you put into finding the true serial killer. Still, it is one of the most enjoyable side quests in the game.

That is everything you need to know about the Fifth Commandment side quest in Kingdom Come Deliverance 2. For more tips about the game, consider reading our How to find Bohuta Treasure map, How to Get Fever Tonic Herbs & Craft Potion, and the Best Horses and How to Get Them in Kingdom Come Deliverance 2 guides.