Christopher was abducted when he was almost 4 years-old.
Louis, Chris's father, has only seen compositions of his son since 1987.
His sister, Lisa, was age-enhanced to look like this photograph.
This is an age-enhanced photo of Christopher Zaharias
A age-composite of Christopher at 12 years-old.
Lisa Zaharias was 15-months-old when she disappeared.
Cops say Susan Zaharias abducted her two children, Lisa and Christopher.
Susan was enhanced to 45 years of age.
At the time of the abduction, Susan was allegedly battling cocaine addiction.