2. Person of Interest

While the investigation into Madeleine's disappearance continues, the police begin to suspect that a helpful onlooker may be hiding something.

3. Pact of Silence

As the Portuguese police face increased media scrutiny, the McCanns find their account of the night of Madeleine's disappearance called into question.

4. Heaven and Earth

The use of forensic dogs at the crime scene leads the investigators in a new direction. Later, an allegation rocks Gerry and Kate McCann.

5. The Fightback

As the world turns against them, the McCanns receive some support. Also, a change in leadership shakes up the investigation.

6. Dark Places

Private investigators reinvigorate the search for Madeleine. An FBI sketch artist takes another attempt at drawing the chief suspect.

7. Truth and Lies

The search for Madeleine takes investigators down a dark path. The McCanns battle Gonçalo Amaral in court.

8. Somebody Knows

The media is taken to task for ethical missteps. Despite it being more than a decade since Madeleine was last seen, the McCanns remain fueled by hope.