While it has been over 10 years since the disappearance of British child Madeleine McCann in 2007, the cold case still inspires curiosity and speculation to this day.

Madeleine was only 3 years old when she was reported to have been abducted from her holiday apartment in Portugal, while her parents had dinner at a restaurant not far down the road.

Netflix has just released an eight-part documentary series that explores her case in depth, and brings a new spin on the search for Madeleine, but featuring a police officer that insists Madeleine will be found alive.

The documentary is titled, “The Disappearance of Madeleine McCann” and it premiers on Friday. There are more than 40 witnesses and experts who feature in the series, and who offer their theories surrounding the initial investigation as well as the aftermath. It also delves into theories of what might have happened to her since her disappearance, and one of the most popular explanations is that the toddler was abducted by human traffickers and smuggled out of Portugal.

Featured in the series is the head of the first British investigation into Madeleine’s disappearance, police officer Jim Gamble, who says he still has hope that one day she’ll be reunited with her parents.

“I absolutely believe that in my lifetime we will find out what has happened to Madeleine McCann,” he said.

Another important person to be featured in the documentary is Juluan Peribanez, who was hired as a private investigator by the McCanns. He believes that whoever abducted Madeleine would not have killed her.

“The value that Madeleine had was really high,” he explained, “because if they took her it’s because they were going to get a lot of money.”

Viewers who have seen the previews for documentary are quick to point out that it portrays the Portuguese police as “slow and secretive.” It also leaves them with the blame for wasting crucial time during the initial investigation by going after Madeleine’s parents, Kate and Gerry McCann, as the prime suspects.

Detective Goncalo Amaral, the head of the original Portuguese investigation, is also featured in the series. He accused the McCanns of covering up their involvement in Madeleine’s death. He was known for making other claims that eventually ended with him getting kicked off the case.

While Netflix users will no doubt be binging the series this weekend, the McCanns will not. Both Kate and Gerry McCann refused to be a part of the documentary, and there are sources claiming that it was produced without their approval.

Clarence Mitchell, the family’s former spokesman, told “The Guardian”, “Kate and Gerry didn’t ask for it and don’t see how it will help the search for Maddie on a practical level, so they chose not to engage.”

The investigation into Madeleine’s disappearance continues into the present day, with new funds up to the value of $200,000 being added to Scotland Yard’s Operation Grange task force last year in order to keep the process going.

What are your theories regarding the Madeleine McCann case?