Whodunit? RP

[Rena]

Not really angry at you Brad. Just the story

Rena's P.O.V once more:
Gahh, stupid Brad. He keeps giving me looks, as if he thinks I'M the murderer, please. I was right across from him when Nichola was killed. Princess was to my left, and Amber to my right. Mike had a knife, although, did he use it? What evidence do we have of anything? We need clues, or else, someone else'll be dead. Better not be me. I hope it's Brad.

Back to reality:
"Y'all can't go blaming all of you. Maybe she killed herself...?" said Sergeant Ned.
Everyone shot glances at one another, now biting their nails, twisting their hair with their fingers, and much more.
"Why would she kill herself, I thought she liked life...?" questioned Brad.
"She did, you could easily notice that," muttered Rena, obviously still angry at Brad.
Mike twisted the front part of his snake bites, and took them out. He put them into his pocket.
Everyone sat down, while the policemen continued to take photos of the dead body.
Shutter after shutter coming from the camera. The room was dark, and was lit by the faint moonlight coming in through the window, other than that, it was pitch black. When the camera took a photo, the room would light up with a white flash. It was awkwardly silent, until Niall perked up, moving his head side to side, looking as if he was trying to see something.
"What's up Niall?" asked Princess curiously.
"N-n-n-nothing" whispered Niall, not stopping.
"The room lit up again from the flash.
"Did you see it!" shouted Niall.
"See what?!" dryly shouted Alisha.
"I think I know!" called out Brad, "Nothing!"
"Haha, funny..." muttered Niall, now rolling his eyes.
The room flashed again.
"Oh my gosh! I think I know what he's talking about!" yelled Rena, now biting her right thumb's nail.
"The silhouette of the person, is that what you saw?!" she continued, now crying.
"Yeah, yeah! That's it! It keeps moving! Whenever the room lights up!" screamed Niall.
The two kids hugged each other, being scared of the thing.
Everyone waited for the flash of the camera from the lounge room. The 6 of them sat of the floor, looking through the open door, waiting. Then, a scream was heard. A very man-ish scream indeed. The noise of a stab what heard, then two loud thumps. That same whisper again. Once more;

WHODUNIT.