March 15th

It features 40 experts and key figures in the case, some of whom argue she was taken to another foreign country.

The ensuing search for her became the highest-profile missing person investigation in history – but she has never been found, despite the involvement of both Portuguese police and Scotland Yard.

Jim Gamble, the top child protection cop in the UK’s first Maddie investigation, says:  “I absolutely believe that in my lifetime we will find out what has happened to Madeleine McCann.

“There’s huge hope to be had with the advances in technology. Year on year DNA is getting better. Year on year other techniques, including facial recognition, are getting better.

“And as we use that technology to revisit and review that which we captured in the past, there’s every likelihood that something we already know will slip into position.”

March 15th - However, it should also be noted that the McCanns have had no involvement in the film.

‘We are aware that Netflix are planning to screen a documentary in March 2019 about Madeleine’s disappearance,’ the couple said in a statement.

They added: ‘We did not see – and still do not see – how this programme will help the search for Madeleine and, particularly given there is an active police investigation, it could potentially hinder it.’

BOTCHED PROBE

From the moment Madeleine disappeared, cops were slow to respond.

The film features Robert Murat, a Brit living in Praia da Luz and the first named  suspect, who says he felt like he was “being set up”.

Private investigator Julian Peribanzes also says cops just wanted to blame the parents.

The officer leading the probe, Inspector Gonçalo Amaral, right, was sacked  in October 2007.

Searching for Madeleine: A Sky News documentary on the McCann investigation