Donald Moeller was convicted based on these facts:
Nine-year-old Rebecca O'Connell (Becky) of Sioux Falls was last seen on the evening of May 8, 1990. The next day, two men found her body in a wooded area in Lincoln County, South Dakota. An autopsy revealed that she had been vaginally and anally raped, and had sustained knife wounds to her neck, back, shoulder, chest, hip, arms and hands. A pathologist concluded that she died as a result of a cut to her jugular vein.Moeller's DNA at the crime scene conclusively demonstrated his guilt for the crime.
It appears that Moeller had previously been convicted of attempted rape, during which he threatened to stab the intended victim's infant if she did not stop resisting his advances. He had also been convicted of grand larceny, escape, burglary, grand theft, aggravated assault and another grand theft.
A violent offender with an escape on his record, brutally and unnaturally rapes a child and kills her in a torturous fashion.
I can imagine no scenario under which an offender like this could be effectively rendered harmless, short of the death sentence he so rightly received from a jury of South Dakota citizens. I can imagine no sentence other sentence which would adequately redress the moral harm done by the crime.