A report on Kenneth Allen McDuff, a paroled Texas murderer who became a suspect in the 1992 murder of Melissa Northrup. Included: his trial; allegations that he abducted another young woman.

Scheduled: Updates on the John F. Kennedy Jr. plane crash off Martha's Vineyard, Mass. Reporting: Dan Rather, Troy Roberts, Russ Mitchell and John Roberts.

In 1969, Russell Obremski was convicted of murdering two women in Medford, Ore., and sentenced to life in prison. A report considers why Obremski was granted parole in November 1993. Richard Schlesinger interviews Obremski, and there are comments from the victims' children.