We have covered the description of the elements that need to be done so you can find the murderer.

Here you’re free to get the Diamond in the Rough achievement.

We’ve described the steps you should probably take to find the killer.

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We also provide the correct solution to the puzzle and list the consequences of your choices.

Completing this quest will earn you the Diamond in the Rough achievement.

Investigating the body

After talking to the Lord, you might examine the woman’s body.

PC

Desk and table

There’s a huge desk right by the front door.

Several letters are on top of on it, including a notice from the police station.

you’re able to easily go through them, no one will be bothered by that.

PC

Doors

There’s a door right next to the vanity.

They lead to the next room - in this case to the room where Luka is.

Check them to find out that they have a very weak lock.

PC

Seance room

After examining the body and the room, you must go to Luka.

Start by going down to the reception desk and getting the key.

They’ll hand it over to you without any problem.

PC

Importantly, Luka will not notice your presence.

you’re able to explore the room first, and then talk to him.

Then take out one “chemical operation” and combine the reagents with it.

PC

Then combine “Chemical Operations” with the unknown substance.

This will give you the final result.

Talking to the medium

During your conversation with Luka, you have to look at him.

PlayStation

You have a choice between arresting him and helping him escape.

Your decision will end this part of the game.

Whatever decision you make, you will receive the Diamond in the Rough achievement.

Xbox

Consequences:

you might read the newspaper later in the game.

It’s available at kiosks, of which there’s a few in the city.

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Sherlock Holmes: Chapter One

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