Hitman 3 Mysterious Switch - Dartmoor Secret Room

There is a mysterious switch in the library of the mansion in the Dartmoor mission in Hitman 3. When you first encounter it, you probably won’t be able to activate it – a special item is required. Once you have it, it’ll give you access to a secret room with a vital clue that can change the course of your murder mystery investigation. If you’re wondering what it is that you need, and where to find it, our Hitman 3 mysterious switch guide will show you.

How to activate mysterious switch?

First off, you’ll need a crowbar. You can get one from a crate next to the grocery van on the east side of the mansion. Once you’ve got it, go inside and head up the stairs to level 1.

Head to Emma & Gregory’s room and use the crowbar to open the door. Turn right immediately and you’ll spot a walking cane against the dresser. Pick it up – that’s your key.

Now all you have to do is head to the library, pull out the stick and use it on the mysterious switch. The bookshelf will slide away, revealing a secret room behind it.

It’s a hidey hole of sorts, with peep holes looking into the adjacent halls. But there’s also an item of note there – it’s an unopened letter from Montgomery, in which he renounces his fortune and reveals his plan to marry a common girl. It’s just one of a sea of clues for the murder mystery, but it opens up some new possibilities for the investigation.

Plus, it’s a great place to hide in case you alert the security for any reason – nobody knows about the room so they can’t search it, and you’ve got your own primitive surveillance system inside. What more can you wish for?