Webinvestigators began to suspect that andrea may have fallen victim to serial killers mark riebe and william alex wells iii, who were known to have committed multiple murders. Webseveral unconfirmed sightings of the two have been made in oklahoma, however one theory explored by police is that they were both kidnapped by a drug dealer (dunn's. Webtoday marks the 29th anniversary of the disappearance of andrea durham. Webinvestigators do believe it’s possible andrea was a victim of serial killers mark riebe and william alex wells iii. Webandrea durham (13) went missing from fort walton beach, fla. , on feb. Webpolice have investigated the possibility that andrea's disappearance was connected to mark riebe and william alex wells iii, who are suspected of having. Webher mother and sister left and returned two hours later to find andrea was missing. There were no signs of forced entry. Webtoday marks the 29th anniversary of the disappearance of andrea durham.
