Ellabeth Lodermeier was last seen at her home on the 300 block of north Indiana Avenue in Sioux Falls, South Dakota on the evening of March 6, 1974. Her car was left in the driveway, the house was locked, a loaf of bread was rising in the kitchen, flour was spilled on the floor, and a fresh pizza had one slice missing. Her coat and purse were gone; nothing else appeared to be taken.

Ellabeth was estranged from her husband, Gene Vernel Lodermeier, and the divorce was weeks from trial; he was the last person known to have seen her and is considered a person of interest. Her boyfriend, who lived in Sioux Falls but was out of town that day, returned, spoke to police and passed a polygraph; he was cleared of suspicion. Later in 1974 her credit cards turned up in a railway station bathroom in Dauphin, Manitoba, and in 1992 her purse, wallet and checkbook were recovered on the banks of the Big Sioux River; searches turned up no sign of her or a body.

Ellabeth graduated from Augustana College in 1972 and worked as a social worker. Her family reports she had a history of an abusive marriage. Her case remains unsolved and foul play is suspected. Does anyone who knew Ellabeth or was in Sioux Falls in March 1974 have information that could help explain what happened?