'The Twelve Days of Christmas' chronicles the slow unmasking of a seemingly perfect middle-class lifestyle. Rachel waits in her office, which is a well-appointed garden room at the back of her detached home in a leafy suburb of Edinburgh for her first therapist session of the day. During the different therapy sessions, Rachel thinks back to her own troubled past, piecing together the shards of guilt, shame and necessity. When Rachel’s first client, Joyce, talks about the tragic life she endures with a violent and controlling husband it opens up a door that Rachel would have preferred to remain closed. All is not what it seems in Rachel’s seemingly perfect life, and as each layer is peeled away, we discover she has a dark side and a secret she is determined to keep hidden.