Chocky - Radio Drama

Chocky is a science fiction novel by John Wyndham, here presented as a single 90 minute drama.

For those not familiar with the book, the plot can be summarised thus:
Matthew has an imaginary friend, or so his family believe, and with whom he argues. As the play continues, it becomes apparent that Matthew is actually communicating with Chocky, an alien from another planet, seeking a new planet to colonise......