http://home.bt.com/lifestyle/house-home/home-hacks/signs-home-is-haunted-11364012395049
https://www.thesun.co.uk/fabulous/5330927/spooky-signs-house-is-haunted/
https://really.uktv.co.uk/article/read-how-tell-if-your-house-haunted/
https://en.wikipedia.org/wiki/Poltergeist
https://www.strangerdimensions.com/2016/02/14/4-signs-your-pet-has-seen-a-ghost/
https://www.thoughtco.com/what-is-the-disappearing-object-phenomenon-2595929
https://www.strangerdimensions.com/2014/06/17/ghosts-cause-cold-spots/
https://science.howstuffworks.com/science-vs-myth/afterlife/ghost3.htm