Donna Marie Bakker was 61 when she was last seen leaving her home in Niagara Falls, Ontario, on November 23, 2003. She was described as slender with brown, curly hair and was wearing a full-length black coat, a gold-and-brown long-sleeved shirt with matching pants, black loafers and dark-framed glasses.

On November 24, her vehicle was found abandoned across the border in Niagara Falls, New York. The discovery of the car in another country prompted a cross-border investigation led by the Niagara Regional Police Service in Ontario. Few public details about her movements that day have been released, and the circumstances between her leaving home and the vehicle being found remain unexplained.

Anyone who knew Donna or who may have seen her or her vehicle on November 23–24, 2003, is asked to contact investigators with information.