6-year-old Michael and his 5-year-old sister Pamela were walking back to their family's residence from Betsy Ross Elementary School in the 2900 block of Bay Street at the Eastex Freeway in northeast Houston, Texas on January 10, 1985.
They were both kindergarten students at the school: Pamela was in kindergarten for the first time and Michael was repeating it.
Witnesses saw the kids get into a green vehicle with an unidentified man. Michael and Pamela never arrived home and have never been heard from again.
In May of 1985, (four months after the children's disappearances), a man called the Houston police to say that Michael and Pamela weren't kidnapped and were living with their grandmother on 75th Street in Los Angeles, California.
The Mayfields have relatives in Los Angeles, but none of them had the children or knew where they were. The caller has not been identified, but his voice sounded as if he was an elderly African-American.
Michael and Pamela lived with their maternal grandmother in the 3500 block of Des Chaumes Street in Houston at the time of their disappearances.
They frequently visited their parents, who were separated but not divorced in January of 1985. Investigators say Michael and Pamela were loved by their family and not mistreated.
Police believe they were abducted by someone they knew, such as a relative or family friend. Their cases are unsolved.
Michael stuttered at the time of his disappearance and he has a burn scar on his right wrist.