Marilyn disappeared on March 21, 1972 while riding her bike to the bus stop to go to school in Mackay, QLD. She was 14 years old. Her brothers, Rex and David, were 10 minutes behind her and found her abandoned bike and schoolbag on the side of the road near a canefield.
A partial skull which was found in 1974 was confirmed to be Marilyn’s through DNA testing in 2015.
An aqua coloured Holden sedan was seen on the road where Marilyn disappeared.
The reward for information has been raised from $250,000 to $500,000 for 12 months only. Read here for more information.