Vicki found herself transported into the world of the Spooks when Danny suffered a completely non-spying related injury. Her sparky and easy-going attitude stuck out like a sore thumb around the MI5 crew. She didn't take life or their work nearly as seriously as they were used to.
She struck up a relationship with Tom Quinn. When he dumped her, she was bitter, and her childish attempts at revenge put Tom and the entire team at risk. Luckily MI5 has the power to silence troublesome people, and Vicki quickly learnt to keep her mouth shut.