Imaginary Enemies

In Leadworth, during the 1990s, the nativity play is almost starting and young Amelia Pond is being bullied before the school play by the main star Veronica (the mayor's spoiled daughter) saying she's mad and she'll get locked away forever. Veronica then breaks the Raggedy Doctor doll Amelia made. Whilst in the library she's visited in the mirror by a man who appears similar to a reverse Santa Claus claiming to be her uncle "Krampus" who is really a member of the Pantheon trying to prevent the future Amy and Rory from getting married and joining the mad man in the box, and conceiving their child who would go on to kill the Doctor.