It has been 46 years since 6-year-old Etan Patz disappeared in SoHo. After a lawsuit and two criminal trials, questions remain about how he died.

"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,