Shared psychosis: an extremely rare condition found in the DSM IV that describes psychotic behavior exhibited by a healthy individual who is under the influence of a close friend or family member with schizophrenia. There is a lot we don't know about the mind; however we do know that people can act in irrational ways when the neurotransmitters in their brain are not functioning properly.

Could this explain the case of the Eriksson twins? These sister were behaving strangely before darting across one of the busiest highways in the United Kingdom, known as M6. Not only did they display super human resilience when hit by vehicles traveling at very high speeds, but they continued to be defiant to the police officers and paramedics that were trying to assist them. Are their behaviors simply a product of delusion? Or could there have been something more... drugs, conspiracy or even a suicide pact?

The story of the Gibson sisters is similar however significantly less violent and more strange. These sisters grew up in social isolation due to being victimized as the only black girls in their area in Wales, England. They quickly turned toward each other and inward for comfort. They developed an unhealthy dependence upon each other and began acting in bizarre ways. Sometimes they would move in-sync almost as if they were both puppets controlled by an invisible puppeteer. They spoke to each other in their own made-up language. This strange behavior progressed into violence and crime and eventually led to the demise of one of the sisters. But what really caused her death? Listen to this episode and find out for yourself!

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