48 Hours

Betrayal (21x25)

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California computer whiz Hans Reiser seemed to have it all-a beautiful Russian wife, two children, and a successful career. But the seemingly perfect life hit turbulence when several years into the marriage his wife Nina had an affair with one of his friends. The couple eventually separated and would become embroiled in a nasty custody fight. Fast forward to September 2006, Labor Day weekend, when Nina dropped the children off at their father's house and mysteriously vanished in the hours that followed. Nina's body has never been found. Was her husband-or someone else-somehow involved in her disappearance? Correspondent Maureen Maher reports.