You look up at the ceiling and there is a door that gives you access to the next floor.
You open the door and a ladder falls. You climb the ladder and enter the third room.

ghost

Room #3

There is a ghost sitting in a rocking chair with burn marks all over their body, especially around their neck.
They say that they will tell you how to get to the attic if you help them solve their murder.

The list of suspects includes their sister, husband, butler, and neighbor.

Information:

Who is the killer?