How do I find out if there is a ghost in my house

If u find any thing happening bad in your house, which does not have any rationale, u may suspect the presence of ghost.

Well it depends, most things do have rational explanations. Like the Wind, Mice or Rats that makes lots of noise. Things being misplaced can be family members move stuff or you moved it and forgot about it. If all of that has been disproved, than yes it could be ghosts or Spirits or some Energy form,

Before I would even attempt to answer this question I have to ask, What makes you think you have a ghost in your house?

PsychOps