A New York federal appeals court overturned the conviction of the man found guilty in the 1979 kidnapping and killing of 6-year-old Etan Patz, bringing back to the spotlight a case that drew national attention and changed the way missing-children cases are handled.

"48 Hours" goes inside the painstaking investigation through the eyes of those who have spent more than three decades trying to find the 6-year-old boy and to bring closure to his heartbroken parents

A federal appeals court said on Monday that Pedro Hernandez, the man convicted of killing six-year-old Etan Patz in 1979, should either be retried or released. Hernandez, 64, has been in a New York state prison since 2017,