Cath Hardacre is a hardworking and skilled nurse who loses her job for whistle-blowing and is forced to take drastic measures to provide for her daughter. Out of desperation, Cath seizes the opportunity to steal her best friend's identity as a senior doctor and start a new life in Edinburgh. Burying herself deeper and deeper in the imposter persona, she realises she could get everything she ever wanted - but with her old life threatening to destroy her fragile creation, how far will she go to protect it?

Ellen gets unexpectedly pregnant just after landing a big contract for her architects' practice. She hopes to be away for the shortest time and hires someone to cover the gap. Paula is the same age as Ellen but already has a ten-year-old daughter. She made the opposite life choice, took a big chunk of her career out to dedicate herself full time to her child. As Paula shadows Ellen for the last months of her pregnancy, she seems the perfect hire - enthusiastic, personable, super-competent. But Ellen begins to worry Paula has another agenda. Paula refuses to believe Ellen when she says she plans to return in a couple of months. She's confident Ellen will change her mind when she falls in love with her baby. Ellen thinks that maybe Paula doesn't want her back. Ever. Ellen becomes increasingly disturbed by Paula's subtle manipulations at the office. She sees Paula ingratiate herself with bosses, client, even friends. Ellen begins to see her less as a support and more of a rival. But no ... Written by Left Bank Pictures