Killer Sister

After her mother's untimely death, Kylie believes that she has no one left in the world. That is, until her mother's final letter to her daughter reveals that Kylie was born a twin. Kylie's twin has been locked away in a mental institute since they were young, and Kylie has no memory of it at all. Not of her twin or why she was sent away.

But her sister, Kara, remembers everything.

With Kara being all she has left, Kylie takes her out of the institution to be a family again.

But now that Kara is out, there will be killer consequences.