Gwen sat on a bench.

The wind swept through her hair and she slurped her chocolate milkshake. She watched couples walk by hand it hand, children chasing each other and business men rushing hurriedly with their briefcases. Did she miss her old life? Not knowing what was out there, the excitement, the wonder, the romance…the horror. Would she ever be able to go back to a normal life? She doubted it.

Her Bluetooth headset bleeped.

"Gwen, It's Jack. Come to the Hub now, Tosh has found something interesting".

Gwen just gave an "Hmm" and she continued to sit on the bench for a few minutes before she finally got up and made her way to the Hub.

The large steel door rolled open and Gwen walked inside to find the rest of the team staring at a single monitor.

"Hey, come look at this" Jack said to Gwen, his voice focuses. Gwen plodded over and adjusted her eyes to the bright screen in the dimly lit dungeon that was the Hub.

"What's this then?" she asked.

"Tosh has found something rather interesting" Owen said. Tosh's lip corner curled into a tiny smile only for a second, she loved it whenever Owen made a positive comment about her. The monitor was showing two CCTV screens.

"This man was at each site on the night of the victim's death" Tosh explained.

"He wasn't there on the road..." Gwen said before being interrupted by Jack.

"Yes he was but you couldn't see him". Gwen looked puzzled.

"What you mean, he was hiding on the edge of the road or in the trees or..."

"No, as in he was standing directly in front of you. In fact, exactly where the woman who you hit was standing when she died". Jack explained. Gwen couldn't believe it.

"What? How?" she asked. Tosh then took turn in explaining.

"Going by these recordings, he goes to stand in the exact spot where the victim will die. The camera then turns but when it comes back he is no longer there and we don't see him move past so we believe that he actually disappears"

"Disappears?" Gwen asked, trying to get this crazy idea through her head.

"Not really, he's still there" Jack said, he continued

"The rift energy inhabits his body, he is a host but it's taken over every particle of his body, so he can vaporise. Making the air cold, breathed through the lungs and then attacking the body. Then he reappears and walks away, there look" he said, pointing towards the camera. Gwen noticed it did indeed show the man standing right beside the dead victims.

"Do we have any idea who this man is, have you run a search on his image or something" Gwen asked, sounding a little worried.

"Yeah but nothing came up. He doesn't exist. Not on this planet anyway." Tosh said.

"He's an alien?" Gwen said, her eyes wide open. Owen gave a soft nod.

"Shit" Gwen said.

"Question is how are we going to find him?" Owen said. A shiver ran up Jack's spine, which doesn't very often happen.

"That shouldn't be a problem" he said, his voice quaking a little. The team looked at him.

"Why's that" Ianto asked. Jack took a gulp and pointed at the screen. The team's eyes followed his finger and as he said, on the screen which was streaming the footage from the CCTV camera located at the entrance of the hub, was the man from the previous recordings staring directly into the lens.

"Oh my god" said Gwen. Hairs stood up on her arms and neck. The camera slowly panned to the right. The following few seconds seemed to last a lifetime as the camera slowly panned left to reveal that the man was no longer there.

"Oh fuck me!" Gwen said, fear in her voice. Ianto's hand was twitching, Tosh was looking in all different directions trying to calm herself. Owen clenched his teeth and a trail of sweat ran down Jack's cheek.

A thunderous noise echoed throughout the Hub as the large steel door rolled open and the team together jumped but quickly pulled and pointed their guns.

UP NEXT: FINAL CHAPTER