Dreams and Fantasy: Making 'The Invisible Enemy'

The cast and crew recall the making of ' The Invisible Enemy' and even take the original K-9 for walkies. With actors Louise Jameson and John Leeson, director Derrick Goodwin, co-writer Bob Baker, visual effects designers Tony Harding and Mat Irvine, K-9 operator Nigel Brackley, and journalist Gary Gillatt.