Teen Wolf, Season 4

Lydia:
It took them four days to find Maddy's body. And then, it took decades to figure out how Lorraine knew. She started with parapsychologists, like the Ph.D in their name made it more scientific. They built the study in the lake house according to every pseudoscientific theory they could find. None of it worked. So, then, she started going to more extreme occult. Things like mediums and psychics-- all of them were failures... until she found Meredith. They found her in Eichen House. This fragile girl who didn't understand the things she heard. They brought her to the study, and they almost killed her. She was hospitalized for over a year. She... never really recovered. My grandmother drove her insane, and I drove her to suicide. And all she ever wanted to do was help. My grandmother created the code for the deadpool. They think she's the banshee who put the names on it in the first place. She left me this message in the same code.