Who knew that office politics would make such a good thriller?  Vicky McClure and Morven Christie star in this three-part psychological thriller, which has an air of Single White Female about it.

Ellen (Christie) is preparing for her maternity leave from her architectural practice when she finds the perfect replacement in mum-of-one Paula (McClure).

But when Paula comes in to job-shadow, Ellen begins to see her as a friend-stealing manipulator.

Are her own insecurities to blame or is Paula trying to take over Ellen’s life, not just her job?

A spine-tingling, puzzling portrayal of office politics, with a nice amount of ambiguity as you’re never quite sure whose side you’re on.