Eva - A German Ghost Story by Gillies MacKenzie
A Brit living in Germany comes home one Friday evening close to Christmas to find the ghost of a young girl inside his apartment. Over the next four weeks the girl takes him back in time to 1942, where she needs his help to change the past. The problem is that the girl is mute, and being pursued by two other ghosts trying to stop them.
He discovers that the girl, the apartment building and most of the city were wiped out in a huge night-time bombing raid that took place the day before Christmas Eve. As the days count down to the 23rd, the fight for the past intensifies… and then the first bombs begin to fall.