|Disappeared||June 18, 1998|
|Missing for||23 years|
Henry Peter Ackerman was an adult male who disappeared while traveling to Memphis to purchase a truck. While in Memphis, he would meet with his friend Dale Mardis. In 2011, Mardis plead guilty to the murder of Mickey Wright and also confessed to Ackerman's murder. Ackerman's body has never been found but his case is considered closed by investigators.