According to the Daily Mail, the documentary will be available later this month on the streaming service of Netflix. The parents of the girl, who disappeared almost 12 years ago from an apartment in Praia da Luz, Algarve, refused to participate.
Produced by Pulse Films, the documentary does not count with the participation of Madeleine McCann's parents who, despite insistent requests from producers over the past 18 months, refused any kind of involvement, according to the Daily Mail.
However Netflix - winner of three Oscars last Sunday with the film Roma - continued to develop the documentary that will showcase new interviews with key researchers as the 12th anniversary of one of the most famous cases of missing children in the world approaches.
"Everybody, anywhere in the world, is fascinated by Maddie's story. We would have liked to have had the opportunity to work directly with the McCanns, but they informed us that they would not consider taking part while the police investigation for the abduction of their daughter is still ongoing", a source close to the director told The Daily Mail.
"But we have interesting new interviews with people close to the investigation and we believe we can do justice to this incredibly tragic story."
Maddie, a three-year-old, disappeared from an holiday apartment in Praia da Luz, Algarve, Portugal, on the 3rd of May, 2007, where her parents had left her to sleep, along with two twin brothers, Sean and Amelie, two years old, while they went to have dinner with some friends in a restaurant, next to their vacations apartment.