Madeleine McCann

Christian Brückner, who is currently serving time in a prison in Germany, has been convicted of multiple sex crimes against young girls.

Christian Brückner has been linked to multiple missing person cases, in addition to the infamous disappearance of Madeleine McCann.

A suspect identified by German authorities as 43-year-old Christian B. has been linked to other sex crimes, but a prosecutor says there's not yet enough evidence to charge him with the British toddler's murder.

Christian B reportedly living in and around the Praia da Luz resort area where Madeleine McCann was last seen.

Investigators have pointed to an incarcerated German sex offender named Christian B. as a suspect in the Madeleine McCann case.

A German man who has previously been convicted for sexual crimes against girls has been named as a suspect in the disappearance of Madeleine McCann, who vanished in 2007.

The nearly 4-year-old Madeleine McCann vanished 12 years ago while on vacation with her parents in Portugal.

Julian Peribañez relentlessly tracked down leads in the Madeleine McCann case, even infiltrating the seedy underworld of sex trafficking to try to find the missing 3-year-old. 

Netflix's new docu-series "The Disappearance of Madeleine McCann" features a complex web of players.

Years before Madeleine McCann went missing, another little girl disappeared in Portugal, as documented by Netflix's "The Disappearance of Madeleine McCann."