A Southern California woman's fall down the stairs initially appears to be a fatal accident, but when deputies arrest her husband, his story unravels. Keith Morrison reports.

Josh Mankiewicz sits down with Andrea Canning to talk about her latest episode, “Chameleon.” When Fran Gladden Smith went missing from her New Jersey home in 1991, police had their eyes on her husband, John Smith. Over the course of their investigation, they discovered that Fran wasn’t the first...