Police investigating the disappearance of Madeleine McCann are currently searching a reservoir in Portugal, 50km away from the holiday resort where the toddler went missing in 2007. It is believed the area was visited by chief suspect Christian Brückner around the same time that Madeleine disappeared. But who is Christian Brückner, what is his criminal history and how exactly has he become linked to the McCann case? Berlin correspondent for The Irish Times, Derek Scally, brings us the details.

This episode was originally published in October 2022.

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