Zane was last seen in Frankfort, Illinois on April 18, 1977. (It is possible that she went missing the year prior - 1976). She was going into town to visit a friend. She never made it to the friends' house and was never heard from again. April had a record of running away from home, but always turned up later. She was found several times in the Chicagoland area and arrested for curfew violation.