I don't understand how this ghost hunting works, can anyone explain? I couldn't find any evidence in any room I went to.
I accepted the contract as soon as the game started and went the same day
A typical ghost hunt works along the same steps basically:
1. Enter the house
2. Start with switching on the light in each room you are in
3. Measure temperature
4. Move to next room
This is the basic step to either find a ghost in the room because the temperature is high or finding the ghosts's favourite room due to the temperature. Certain low temperatures mean it is either empty currently or not a favourite room
Moving from room to room this way enhances the chances for an interaction (ghost switches light off) and tells you which room you have generally checked.
Once you get either a reaction or find a room with high enough temperature you start sticking to that room. Keep on taking temperature until you get a reaction and then measure with the other instruments.
P.S. The base instruments are not precise enough to guarantee success of those measurements. Thus getting a better thermometer is essential early on, since the higher version gives you colour coded results back.