Tonight's Mystery: Burden of Proof

Jim Watson says he argued with his wife Beverly in their Fayetteville, Ga. home. She walked out the front door around midnight and never returned.

That was on Jan. 18, 1997, and Beverly Watson vanished without a trace.

Two years later, 12 of Beverly's bones were found about 20 miles from the Watson home. Jim Watson became the prime suspect in the case. However, his two children believe he is innocent.

Can a tough prosecutor prove, with dust and two scratches, that a loving father killed his wife? Correspondent Harold Dow reports.