Twins Share Inexplicable Stories Of Their Supernatural Connections

https://www.ranker.com/list/twin-connection-stories/erin-wisti

How much can a person still be an individual when they coexist with a genetic copy?

 https://www.cracked.com/article_20355_5-real-life-stories-twins-creepier-than-any-horror-movie.html

https://stephenking.fandom.com/wiki/Grady_Twins

https://theshining.fandom.com/wiki/Alexie_and_Alexa_Grady

https://en.wikipedia.org/wiki/Dead_Ringers_(film)#Plot

https://www.verywellfamily.com/twin-telepathy-2447130

https://www.ranker.com/list/creepy-twin-telepathy-stories/samantha-dillinger?ref=collections&l=2565532&collectionId=1304

https://www.bbc.co.uk/pressoffice/pressreleases/stories/2004/01_january/08/sos_cases.shtml

There are implied psychic connections, but thinking alike to the point of causing death & destruction is never a good thing. 

https://www.theglobeandmail.com/canada/article-bc-rcmp-identify-twin-brothers-as-bc-bank-shooting-suspects

http://toomuchhorrorfiction.blogspot.com/2019/06/twins-by-bari-wood-john-geasland-1977-i.html

https://en.wikipedia.org/wiki/Dead_Ringers_(film)#Production

https://www.goodreads.com/book/show/1017859.Twins