Open House is one of the side cases in The Sinking City you can start in The Shells district.
Go to the Fish Market - this place is in the eastern part of the district, near Freedom Street and Orchard Avenue. There, you will find a seller who will offer you a job. This case requires you to go to three locations and place the powder that will keep the monsters away.
The house in the southern part of Coverside, on Lincoln Street. It is located between Derry Line and Landing Avenue.
In Coverside, you will find only one ruined house. Go through the door and go to the upper floor. Light up the incense in the vessel standing on the dresser.
After that, take a picture of it - this is the only evidence you will find in this location. Open the selection wheel (Tab) and choose the camera.
The house is located in the west of Salvation Harbor on Seven Oaks Street (between Eel and Castle Street).
On the floor, light the incense in one of the many available containers, and take a picture of it. In the building, you can still find:
- journal on the upper floor, in the corner,
- letter on the coffee table,
- letter on the desk.
The last house is in Shells. Look for it on Hawking Lane between Inner Shine Street and Warren Road. This house is at an intersection, in an Infested Area.
Go on the upper floor. Go to the room on the left. Light the incense on the table and take a picture. Additionally:
- find a note on the desk,
- a postcard attached to the painting in the corner.
Lastly, return to the quest giver in the Fish Market in Shells. Besides the experience, you unlock a new costume - Vyshyvanka. You can change the outfit in the room in Devil's Reef.