DEAD FAMOUS - Black Swan

One house, ten contestants, thirty cameras, and forty microphones. Everybody knows the rules'total strangers are forced to live together while the rest of the country watches them do it. However, on day 27, one of the housemates is killed on live TV. Who is the murderer? How did they manage to kill under the constant gaze of the television cameras? Why did they do it? And who will be next?