Exclusive: The McCanns Speak Out

April 28, 2008— -- This week, an unforgettable "20/20." On the one-year anniversary of their daughter Madeleine's disappearance, Kate and Gerry McCann speak exclusively about the night 3-year-old Madeleine vanished without a trace while on a family vacation in Portugal.

This powerful and intimate portrait of the McCanns — told through unprecedented access inside their home — shows them straddling between hope and anguish, and will shatter everything you thought you knew about this case. The sensational story has been front page news around the world, in part because the McCanns still remain official suspects, despite any direct evidence against them. Now, "20/20" brings you new and startling details about what happened that tragic night.

Hours before Madeleine disappeared, why did the McCanns miss a warning sign from their daughter that something might be wrong? Why did they leave their three children alone in an unlocked apartment? Why did they show little emotion in public after their child went missing? And why does a cloud of suspicion still hover over them? Friday, their dramatic story, in their words.