COPS have arrested a man and a woman in connection to a 21-year-old cold case where a teenage lad vanished. Robert Williams, 15, from Resolven, Neath, was last seen on March 22, 2002 while walking to a party.... I don't want him out there on his own and we need closure as a family.“ Someone out there knows what happened to him.... As a mother knowing my child is lying somewhere has destroyed me emotionally and physically....