My name is Lily. I say it in my mind over and over. The rain fell in heavy sheets, drumming a haunting melody on the windows of our old, creaky house. The chill in the air sent shivers down my spine as I sat in the dimly lit living room, my thoughts racing in the gloomy atmosphere. My name is Lily, and this is the story of how I came to realize that the woman I had always known as my mother was not who she seemed.

For as long as I could remember, I had lived with my mother in that isolated...