Metodo 3 is a small Spanish Detective Agency. It was hired by the McCanns in September 2007.
See more details at →McCannFiles
“Método 3 are the team of private investigators hired by the McCanns when they returned to the UK, after the Policia Judiciaria had made them 'arguidos'. It is reported that the final bill for Método 3's work could be anywhere between £300,000 and £750,000.”
At the time working for Metodo 3: