Madeleine McCann May Be Alive, ‘Hidden’ in Portugal, Former Detective Says

Kate and Gerry McCann pose with an artist's impression of how their daughter might look at the age of 9 in London on May 2, 2012. AFP/Getty Images

LONDON—A former investigator who worked to try to solve Madeleine McCann’s disappearance is convinced the girl is still alive and that the case could see a breakthrough.

The British girl was three years old when she disappeared in May 2001 from the family’s apartment in Praia da Luz, Portugal, while they were on vacation.