TV Hijacking

I honestly don't know if I dreamed this, or if it was some sort of extreme prank played by my sister late at night, or... No. I don't want to think about that. Either way, people are starting to call me crazy and I'm starting to believe them.
I was home alone on January 2nd, 2013. My parents were out at some fundraiser for my dad's job and my sister was at her friend's place. My parents had decided I was finally old enough to spend the night by myself.
I was sitting on the couch in the sitting room upstairs at around 1 A.M., just flipping my way through a glossy new magazine and listening to Maury Povich on the TV. Suddenly, all the lights in the house flickered for about ten seconds, then went off completely.
The TV screen fizzed, then appeared on a black screen with what seemed to be a neon green sound register. You know those things, like a heart monitor? That bounces with the sound? One of those. It buzzed lightly with the static noise for thirty seconds, then everything stopped. It wasn't just quiet. It was silent. You don't know fear until you think you've gone deaf and it just keeps. Getting. Quieter.
Then, a loud screaming penetrated the silence. My senses returned to me, there was the screaming and some static and what sounded like something sizzling, but the screaming was the most prominent. It sounded like a woman screaming bloody murder like she is running away from a murderer in a horror movie.
After about ten seconds, it all stopped. The lights came back on and Maury slowly resumed. Terrified, I turned on every light in the house and called my parents, demanding they return home immediately. I slept in between them that night, the first time since I was ten. I was fifteen at the time.
I still don't know what really happened. The news never touched on it, nor the newspapers. I looked everywhere online for any evidence of this, but all I could find was one picture of what had been on the screen. I found it on Exelcior.com, a website that ceased to exist moments after I downloaded the picture. I think I may have been the only person who saw it, because when I asked my friends the next day they all said the same thing- "Forget about it."
I'm still searching for answers.
Category:Television