The initial Portuguese investigation failed to preserve the scene adequately, so the opportunity to gather forensic evidence from Madeline McCann's room at the Ocean Club was lost. Long-term residents remember joining in uncoordinated and ad-hoc searches of the town.

After a three-day search effort drew to a close without any sign of a breakthrough, crime correspondent Amy-Clare Martin reports from Praia da Luz on the latest attempt to give the McCann family answe