A senior detective who worked on the Madeleine McCann inquiry has disclosed fresh evidence and lines of inquiry about prime suspect Christian Brueckner as the convicted offender is due to be released from a German prison after serving a seven-year sentence.
Brueckner, who was named by German authorities as the prime suspect in the 2007 disappearance and presumed murder of three-year-old Madeleine McCann, completed a sentence for the rape of a 72-year-old American woman in Praia da Luz and is scheduled to be freed. German prosecutors have not formally charged him with Madeleine’s abduction or murder.
The disclosures appear in an ITV documentary, Madeleine McCann: Searching For The Prime Suspect, which follows criminologist Dr. Graham Hill, a former senior Metropolitan Police detective, as he returns to Praia da Luz. The programme re-examines Brueckner’s movements, criminal history and items of evidence uncovered by German investigators and witnesses who knew or encountered him.
Journalist Rob Hyde, who has tracked the case in Germany, told Dr. Hill that Brueckner moved frequently between Portugal, Germany and other countries, complicating efforts to monitor him. "There are places in the world with no extradition treaties with Germany," Hyde said, warning of the risk Brueckner could travel abroad after his release. Hyde and others involved in the documentary say they have built a timeline of Brueckner’s movements before and after 2007.
Investigators in Germany have linked Brueckner to a long history of sexual offences, drug trafficking and burglary. Records cited in the documentary show convictions dating back to his teenage years in Germany, including a juvenile conviction for burglary and later convictions for child sexual abuse. He was deported from Portugal in 2017 after an incident in which he allegedly exposed himself in a playground.
Former associates and witnesses interviewed in the documentary offered further allegations. Helge Busching, a onetime accomplice, said Brueckner made remarks that suggested knowledge of Madeleine’s disappearance. Busching recounted a remark he heard at a festival in Spain the year after the child vanished — "She was not screaming" — and said the comment convinced him Brueckner had a role in the case. Busching’s testimony was not acted upon at the time but was taken up by German authorities after he contacted them again in 2017.
Another former associate, Dieter Fehlinger, said Brueckner told him in 2007 that a camper van he had modified could hide "a small child". Ken, an expatriate who encountered Brueckner in the Algarve, described him as a loner who sold drugs and behaved in ways that suggested a sexual interest in children.
German police raided a disused factory owned by Brueckner in Neuwegersleben in 2016 and recovered thousands of hours of material that authorities described as "vile and sickening," along with more than 70 children’s swimming costumes in a vehicle parked on site. Prosecutors said the material included footage showing sexual assaults; some items were alleged to involve Brueckner. Those materials subsequently became central to later investigations but were excluded from a 2024 trial on technical grounds.
Skype chat logs discovered in 2014 and introduced in the documentary contain exchanges in which a user believed to be Brueckner discussed images and films of child abuse. In one exchange, a participant wrote: "Maybe you caught a little one during that time," and the response attributed to Brueckner alluded to filming and torture. German police found those chats in the course of a broader probe into online child-abuse networks.
Brueckner has been linked by German prosecutors to multiple alleged rapes in Portugal, including attacks on an Irish tour guide in 2004 and the American woman in 2005. The Irish victim, Hazel Behan, testified in Germany that she identified Brueckner as the masked attacker who broke into her apartment in Praia da Rocha and recorded her assault. She told the court she was "100 per cent" sure of her identification. Despite such testimony and the digital material recovered from the factory, prosecutors suffered a setback when the evidence was excluded because of irregularities in the warrant used to carry out the 2016 search.
That exclusion contributed to an acquittal on the charges prosecuted in 2024, according to people involved in the case. German prosecutor Hans Christian Wolters told Dr. Hill in the documentary that Brueckner remains the only suspect and that investigators have no exculpatory evidence. "He has no alibi. There is only evidence that incriminates him," Wolters said, adding that proving guilt beyond a reasonable doubt in court remains the central challenge.
A psychiatric report cited in the programme ranked Brueckner among the most dangerous offenders, saying he presented a high risk of reoffending. While serving the seven-year sentence, Brueckner wrote to British newspapers about the McCann case, challenging authorities to present DNA or other evidence directly linking him to Madeleine.
Portuguese police faced criticism in the documentary and from former investigators for possible missed opportunities during the initial 2007 inquiry. Dr. Hill questioned whether Portuguese authorities were given or examined all relevant records of Brueckner’s prior convictions and movements, and whether administrative errors meant he was not included on local lists of sex offenders compiled during the original search for suspects.
German authorities declared Brueckner their prime suspect in 2020 and have continued to investigate. British and Portuguese authorities have maintained co-operation with German investigators, but the disappearance of Madeleine McCann — and the failure so far to bring a case to trial for abduction or murder — has left many questions unresolved.
As the documentary aired, those involved in the case said Brueckner’s imminent release raised immediate concerns about public safety and the possibility he could leave jurisdictions where he might be vulnerable to extradition. Rob Hyde and others told Dr. Hill they feared Brueckner’s history of evasion and links to organised crime would enable him to disappear from the reach of investigators.
Prosecutors say their inquiries continue and that any fresh evidence will be examined. Dr. Hill said his return to Praia da Luz was intended to re-evaluate the physical and testimonial evidence in the hope of advancing the long-running inquiry. The McCanns, Madeleine’s parents, have repeatedly urged authorities to pursue all lines of inquiry to bring clarity to the case.
German investigators have not announced any immediate plans to file formal charges related to Madeleine’s disappearance before or after Brueckner’s release. The case remains open in multiple jurisdictions, and officials have said any credible new evidence would be followed up by the relevant authorities.