Método 3 initially worked on the theory that Madeleine McCann had been abducted by a Portuguese paedophile before being transported to Morocco. There have also been a string of sightings in Morocco of young girls resembling Maddie. Six days after she vanished, Norweigan-born Mari Pollard, 45, said she was "100 per cent certain" she saw Madeleine at a garage in Marrakesh.
In September it emerged a second sighting had ALREADY been reported by a holidaymaker from Yorkshire in a hotel opposite the garage.
Then Jeannie Thompson, 56, from Devon said she saw a blonde girl looking "dishevelled" as a man took photographs of her at a the Cafe des Epices in Marrakesh on May 11. Three more women have since come forward with sightings. At one point they claimed to have found a blonde girl who had been kidnapped by a Moroccan family. Metodo 3 said Interpol is investigating the discovery of the blonde girl living in the Rif mountains — the area where they are searching for Madeleine.
The Rif Mountains are home to the Berber people. It is also the centre of hashish production in Morocco. An insider said: "She was not Madeleine but she was an English speaker, possibly an American...investigators came across her as they were working to find Madeleine and have tipped off Interpol. There is a long history of girls being kidnapped from Europe and ending up in Morocco. It's a very secretive country and the area of the Rif mountains enjoys official protection because of the importance of the hashish production and trafficking that goes on to the country's economy. It was obvious to the investigators that this girl was not with her natural family. It's entirely feasible that Madeleine could be in a similar situation."
The boss of Metodo 3 said he believed Madeleine was abducted by a care worker on the instruction of a paedophile gang who stole the child to order. He believes another girl matching Madeleine's description, who has been spotted with a woman aged about 60 in the Rif mountains by 10 different people, could well be the four-year-old who went missing from the Algarve on 3 May.
Morocco had a reputation as a haven for paedophiles and Kate and Gerry paid a two-day visit earlier in the hunt to meet the Interior Minister and conduct a series of talks with child protection officers.
On one occasion a Berber family even had to produce their child's birth certificate when it
was claimed that she could have been abducted just because she had blonde hair. Mark Williams-Thomas, a former detective and managing director of child protection consultancy WT Associates, said: “It is an astonishing amount of money that is being spent focusing on Morocco.
"There is a big difference between a sighting and information. Unless you have definite information that suggests she is in Morocco then it seems pointless.
“The likelihood of Madeleine being taken out of Portugal is very slim. I would be concentrating more on Portugal than anywhere else. To me, it holds the key.”
George Joffe, a professor at King's College London and an expert on north Africa, said: “It strikes me as wishful thinking that Madeleine is in Morocco. The fact is, blonde, blue-eyed children in northern Morocco are not uncommon. It is not an indication they are stolen.”
In the town of Chefchaouen, a reporter spotted Aya, who is the same age as Madeleine. Her father, a farmer, was amused when showed a photograph of the missing girl and pointed out her similarity to his daughter.
He said: “It is easy to see how a tourist might think this is Madeleine but there are plenty of blonde children here.”
In the village of Souk-el-Arba-des-Beni- Hassan, men gathered round to view posters of Madeleine and an artist's impression image of a moustached man of north African appearance who had been a possible suspect.
He has since been ruled out of the case. The drawing produced almost hysterical laughter.
“There are a million men who look like this,” said Mustafa Ben Dris, who was about the only man there without a moustache.
Looking at posters of Madeleine with Arabic writing on, which we downloaded from the Find Madeleine website, Mustafa said: “We have never heard of Madeleine McCann but she is not here.
"She doesn't have an African face, she has a European face. You could not hide her here.”
As well as Metodo 3 they are using the skills of British-based Control Risks Group. Dozens of agents worldwide were now working on the mystery for the McCanns, with more on standby. In contrast, the Portuguese police have a relatively small team and at one stage it dropped to just six. One obstacle to Metodo 3's efforts was Portugal's lack of a sex offenders' register.
Despite extensive enquiries and after following numerous leads however, Método 3 failed to unravel the mystery, they effectively failed to deliver on any of their promises. Repeated requests by reporters to witness the agency's team in Morocco at work were always turned down.
One million posters of the artist's impression were to be distributed in Morocco and in Spain and Portugal - paid for by the News Of The World in exchange for its exclusive last Sunday revealing details of the man. The response led to a series of leads being followed by Metodo 3 but the chances of finding Madeleine there were almost nil.
Poster: Madeleine's image has been widely circulated in her parents' campaign to find her As interior minister Chakib Benmoussa, who met the McCanns when they visited in June, said: “There is absolutely no evidence Madeleine is here.”
A source close to the McCanns stated, ''The harsh fact is that they were pinning their remaining hopes on Marco's outfit when they hired them on a six-month contract in September. But, in the past few weeks, they have conceded that they might have been sold a pup. There's no doubt they've worked round the clock, but they don't have a lot of experience with this type of investigation."
In November 2007 Marco gave two lengthy interviews about the case, one to El Mundo and another to a Barcelona newspaper, La Vanguardia. Later whilst bristling with bravado before the television cameras, the portly boss of Metodo 3, sneeringly dismissed the Portuguese police investigation into the disappearance of the couple's daughter, Madeleine, as ''bumbling", and boasted: ''We know who the kidnappers are and we are very, very close to catching them."
Off camera, he admitted: "No, I can't disclose any more yet. But I will be proved right."
The Portuguese police initially tolerated the agency's investigations but later dismissed them as ''irrelevant small-fry" who ''lack credibility".
They were incensed by Método 3's allegation that Michaela Walczuch, the German girlfriend of Robert Murat, the only other suspect, was sighted handing over a blonde girl to a mystery man in Silves, Portugal, two days after Madeleine vanished from her holiday apartment in Praia da Luz, 25 miles away.
Another of their witnesses, they claimed, saw Ms Walczuch in Zaio in Morocco on 15 June 2007, shortly after the witness allegedly saw Madeleine there. Exasperated, the police disclosed that Ms Walczuch was at a Jehovah's Witnesses' meeting on that date and that she has threatened legal action against any publication suggesting she was involved in Madeleine's disappearance.
At the same time as police were pouring scorn on Método 3 's investigations, Portugal's most senior law officer, the attorney general Fernando José Pinto Monteiro attacked the McCanns, insisting that their decision to encourage worldwide publicity for their missing child had probably served only to hasten Madeleine's murder.
''If she was kidnapped, it is likely her abductor has killed her," he said. ''All this publicity and with the whole world having seen Madeleine's photo means that there is a greater chance of the girl being dead than alive."
In December, Metodo were splashing the cash and moved to plush new offices as questions emerged about whether they were giving good value for money. People who donated to the Find Madeleine Fund were seeing Metodo 3 pocket £50,000 a month without any apparent breakthrough. The group had not yet produced any evidence to back up their claims that they knew who took the girl.
At a supposedly crucial stage in the inquiry, his luxurious new office - perched above a gay sauna in a grand, pillar-filled building - was in a make-shift state. There was just one staff member in sight, and when asked if Sky News Online could see Mr Marco, she replied: "He's not here, he's out of the country on business. Not with the Madeleine case, on another case."
Her advice was to return in two hours, when the office would re-open.
But on calling back at 4pm there were three staff and a small dog in the reception area, as well as a steady flow of people unloading boxes of files and other office equipment. They refused to say anything, and grew steely when Madeleine was mentioned. A few minutes later, a smartly-dressed detective arrived and refused to discuss anything to do with the case. He kept stressing: "I can't say anything. Only Clarence Mitchell (the McCanns' official spokesman) can talk about the case. I'm sorry." It was late discovered that Marco was out of the country on another case.
Also in early December, a Portuguese lawyer from Madeira called Aragão Correia came forward with the dramatic news that he was sure that Madeleine’s body was lying in a reservoir. He added various details which suggested that he ‘knew’ - as he had ‘been told’ - that Madeleine had been ‘stolen to order’ by a gang of ruthless paedophiles, who had then killed her and dumped her body at the bottom of the reservoir. He provided the information to the police but claims that they were not interested.
In the end he decided to arrange for the reservoir to be searched and sought out a sponsor. During the four days that the searches in the reservoir lasted, the divers only found a rope made out of blinds' strings and a piece of wood. Marcos Aragão claimed that he spent approximately €5,000 out of his own pocket. The search operation was sponsored by a Portimão-based company named SPEC.
Lawyer Marcos Aragao Correia (second from right) speaks with divers at the Barragem do Arade reservoir
located some 35 miles east of Praia da Luz, where Madeleine McCann disappeared on 3 May 2007. It was reported that the McCanns had mixed feelings about the operation since they were of the belief that their daughter was still alive. However, Metodo 3 sent an investigator to the site and took possession of the items recovered by the divers.
Correia was later exposed as a fantasist when a source close to the inquiry revealed: "When we asked him what he was basing his evidence on, he said, 'I had a dream'."
Correia sparked further heartache for Kate and Gerry, when his divers fished a bag of animal bones out of the waters - then claimed they could be child's fingers.
The McCanns' spokesman Clarence Mitchell said: "We have never asked Mr Correia to conduct any searches and have good evidence to suggest his leads are not credible.
"The suggestion that the bones could have been a child's is entirely scaremongering and very hurtful to Gerry and Kate.
"Wild assumptions do not help the investigation. We will continue to work on the basis that Madeleine is alive."