"The Unknown Girl" is one of the most refreshing and original pictures to come out in several years. It is a character study of a female doctor coming to grips with her conscience as she ignores a frantic after-hours caller who is subsequently killed. She becomes a part- time detective to find out what happened to the girl, becoming obsessed at the expense of her practice and at considerable risk to her own safety.
French actress Adele Haenel gives a thoughtful, understated performance as the doctor/ detective. She is in nearly every scene, wearing a hooded parka out of season and with a determined innocence and disregard for normal investigative procedure, which she improvises as she goes. The film achieves the 'suspension of disbelief' necessary for films to work, and receives great assistance from an almost-perfect mise en scene on the streets of Liege, Belgium. It becomes real, for an hour and 50 minutes. Ignore bad reviews and see if you agree it is as close to perfection as filmdom can get.