Madeleine McCann Breakthrough: Police Unveil New Evidence -- Look Back At The Case File

As Scotland Yard reopens the Madeleine McCann case, they'll likely be poring over these crime scene photos once more, looking for missed clues. This first shot shows the living room of the McCann's vacation apartment in the Praia da Luz complex in Algarve, Portugal, where Madeleine vanished on May 3, 2007.

The family was due to leave the hotel the day after Maddie vanished.

The family was due to leave the hotel the day after Maddie vanished.

Madeleine's mother Kate McCann refused to answer questions about whether she drugged Madeleine the night she left her alone in this apartment.

Madeleine's mother Kate McCann refused to answer questions about whether she drugged Madeleine the night she left her alone in this apartment.

The McCann's rental car bore traces of Madeleine's DNA, according to Portuguese police. Subsequent reports deemed the sample inconclusive, however.

The McCann's rental car bore traces of Madeleine's DNA, according to Portuguese police. Subsequent reports deemed the sample inconclusive, however.

Forensic officers dusted the shutters on the apartment windows, hoping to find prints from an intruder.

Forensic officers dusted the shutters on the apartment windows, hoping to find prints from an intruder.

Her twin siblings, Sean and Amelie, were sleeping peacefully in the cot next to the bed -- the only witnesses to whatever took place that fateful night.