Gwen Cooper's hair flew out behind her head, as the air rushed past her face. It would've been refreshing if she hadn't been chasing after the same Weevil for the past 20 minutes. Her face was flushed and hot and she could feel her tight jeans and leather jacket clinging to her skin.

"Gwen, take the next left," commanded Tosh into Gwen's earpiece. "The tracker shows it's at the end of the alley: we've got it trapped."

"OK thanks Tosh, I've got this one." Tapping off her earpiece, Gwen ran left; the narrow walls surrounding her forced her to slow her pace. The alley was almost pitch black; the Moon's light failing to penetrate the thick storm clouds crowding the Cardiff skies. But the familiar snarling of a Weevil told Gwen where she needed to be heading.

She removed the stun gun from its holster and shuffled along the wall, careful not to alert the Weevil to her presence. A sudden rumble of thunder startled Gwen, who curled her arms above her head in an instinctive reaction to protect herself. She smiled a relief, realising that she'd just jumped out of her skin at something as mundane as the weather. But then you never knew with Torchwood– a crash in the middle of the night could turn out to be anything: from a cat toppling a bin to a blowfish joy riding a sports car, destroying everything in its path.

Gwen composed herself before closing in on the Weevil. She was yards away and so far had gone unnoticed. The prey was crouched oblivious with its back to Gwen, tearing the flesh off its latest (hopefully non-human) victim.

"Got ya," muttered Gwen and the ex-policewoman sprung at the alien, failing to notice the cardboard boxes scattered at her feet. She tumbled forward, arms hitting the rough gravel first, her legs still entangled in the boxes. Winded from the fall, Gwen cursed her clumsiness then froze: the hairs all on the back of her neck stood on end as she sensed the hot, wet breath from an angry, snarling Weevil towering above her.

Holding her breath, Gwen clenched her hand, hoping to find the stun gun still there but it had gone. 'Shit!'

Almost as if it had read her mind, the Weevil howled and pounced on Gwen. But she was ready: swivelling on her hips, Gwen spun her legs at the alien; catching it with both feet to its midriff. The Weevil stumbled backwards but unfazed it launched another attack at Gwen, who was on her feet now, can of spray in hand.

She aimed at the beast's eyes, sending it reeling backwards, yowling in pain. Now with the upper-hand, Gwen advanced on the Weevil, forcing it against the wall and handcuffing its arms behind its back. With her victim still dazed, Gwen took the opportunity to call for back-up.

"Jack? Can you hear me?"

"Loud and clear, Gwen" replied Jack.

"Jack, I've got the Weevil, but I've lost my gun. Are you close? I need a hand."

"Need a hand, do you? Well you know I'd be glad to help you out of such a sticky situation."

Gwen didn't need to see Jack's face to know he was wearing a massive grin. Rolling her eyes, she ignored Jack's forwardness (he was definitely getting worse) and replied giving Jack directions to her whereabouts. The Weevil fidgeted impatiently and got kneed in the back by Gwen for its trouble.

"Please hurry up, Jack. I can't stand here all night, I'm not … oh bloody hell!!!" The skies had opened, unleashing torrential rain all over the city, the thunder booming again as though to emphasise the sudden downpour. Gwen was soaked in the time it had taken Jack to respond, reassuring her he wouldn't be long.

The rain was making it impossible for Gwen to keep a hold of the Weevil, which was now thrashing its head and torso in all directions; it was only a few seconds before the Weevil's shoulder slammed into Gwen's jaw.

For a moment Gwen blacked out, collapsing onto the adjacent wall. When she came to, it was just in time to see a handcuffed Weevil lolloping out of the alley and off into the city.

"Argh!" she groaned, they were never going to catch that Weevil tonight, not in this storm. Her vision becoming more blurred by rain, Gwen shut her eyes and leant her head on the wall in defeat, massaging her bruised jaw.

Another rumble of thunder didn't stir Gwen but the familiar beeping of the Torchwood SUV horn, as it screeched to a halt on the roadside did.