Working for MI5 was all Zoe ever wanted. However her confidence and love of the job have taken quite a battering. She had always looked up to Tessa, and it was a massive blow to discover she was corrupt. And as she watched the toll life at MI5 is took on her friends and colleagues, she started to realise that there are massive downsides to being a Spook.

Zoe was brilliant at her job. She could handle any task Tom cared to throw at her. She was charming and quick-witted which made her a real expert undercover, and she's equally good at analysing data and getting answers in the office.

Zoe's spy credentials were seemingly impeccable, but even the best can make mistakes. An error of judgement in an undercover operation cost Zoe her career in the service. She is currently in hiding with boyfriend Will.