Chocky was a kids series on ITV in the mid 80's, it concerned a young boy who began to hear voices and see strange visions.
One day in art class he goes into a trance and draws a spectacular landscape of an alien planet. A childlike invisible alien entity from a distant planet has travelled across the galaxy and become attached to the boy, the governement find out and try to capture it.
I remember it being quite intense for a kids program, it was followed by a 2nd series called "Chocky's children".
Do You Remember Chocky?
Do You Remember Chocky?