Former ballerina and bikini model Ashley Benefield went on trial in July for killing her husband, Doug Benefield, and 48 HOURS was there for every moment of the gripping testimony. Now, for the first time on network television, viewers will be able to see her tell a jury at length what she says happened, in a special two-part 48 HOURS: "The Case of the Black Swan,"

Correspondent Erin Moriarty and 48 HOURS take viewers inside law enforcement's 30-year game of cat and mouse with a convicted child serial killer to get him to reveal where he left the body of a girl he murdered.