Lucie and Danny are best siblings. In fact, they are more than that, they are best friends. They share everything, have no secrets, but this beautiful relationship changes.
Danny starts to become interested in some strange mirrors spread throughout the city and to discover the legend that lies behind them. However, out of fear, his sister decides not to accompany him on his research. Danny begins to change and Lucie is convinced that his brother is no longer himself: he is a fake.

A novel which mixes the diversity of two worlds, one of them, real and known, the other one, mysterious and full of shadows and secrets, where the characters live exciting adventures and the young reader must fit the pieces of the mysterious secret behind mirrors, while learning the importance of friendship, family and overcoming fears.