Twins Are Creepy

I can say that twins are creepy because my Grandpa is one.
Once when I was little, at a big family reunion, I ran up to my grandpa's twin and hugged him around his legs. When he looked down at me and I realized it wasn't my Gramps, I quickly let go and ran away because, although they are identical, the my Grandpa's eyes are warmer than his twin's. It was like meeting his doppelganger.
This is unfair- my Grandpa's twin is a marvelous man.
I'm just being dramatic.
Anyway, the subject of twins came up after I read an article about an operatic adaptation of the book,"The Silent Twins," by Marjorie Wallace.
The book is now atop my reading list.
June and Jennifer were twins who, after experiencing extreme torment in kindergarten, made a pact to stop talking. They alienated themselves from their brother, sister, and parents- they never spoke. However, their mother knew that they could speak because she would overhear them playing with their dolls and narrating out loud in a fast-pace, high-frequency conversational style.
On the twins' birthday one year, their mother gave them a red leather diary with a lock on it and they both began dedicated journals with detailed accounts of their lives and relationship with the other twin.
The two were sent to a psychologist who noticed that June would glare at Jennifer in a way that seemed to be controlling her speech and movement. But there was nothing they could do to help the twins come out of their exclusive bubble of a universe.
When the twins hit their teen years, they became sexual deviants and repeatedly-offending vandals.
They were caught and sent to a psychiatric hospital for 10 years- until they were almost 30 years old. During this time, their journaling turned into fiction writing and, while institutionalized, each twin got a book published. Their diaries give dark accounts of their parasitic relationship. They began to believe that they could not live healthy lives while both alive- one of them would have to die to set the other free.
The night they were released from the institution, Jennifer got sick and died of an inflamed heart. There was no outside influence or illness. Her heart simply gave out.