In this room, you will have to clean up the blood to obtain the secret code to pass the stage. If you are stuck with any part of the stage, refer to this quick walkthrough to help you obtain the S rank in the game.
1. First of all, open the blind to see the clue Blood erase.
2. Open the drawer and pick up a key.
3. Pick up the police bag.
4. Obtain the metal plate on the floor.
5. Use the metal plate on the drawer to open it up. Grab the scissors inside.
6. Use the scissors to cut open the police tape.
7. Mix the police bag with the key. You will now have to do some dividing and mixing of the chemicals. Use the final chemical on the pool of blood to clean it up.
8. Flip the light switch to see that the blood has changed color. Note the code 7230. Remember to turn the light back on or you will not be able to exit the room later.
9. Use the code 7230 to open up the door.
