Lois Hanna vanished in Kincardine, Ont. on July approximately 38 years ago. As part of the Unsolved video series, the Ontario Provincial Police (OPP) has released a new documentary, Vanished Lois Hanna: Unsolved, with never-before-seen evidence and witness accounts. Lois was last seen at approximately 11:45 p.m. on Sunday, July 3, 1988, in Lucknow, Ontario. She said goodbye to her brother, Dave Hanna, at the Homecoming Dance and he watched her walk away. It was an ordinary moment he would replay for decades, never imagining it would be the last time he would ever see her.