The citizens of Pentworth are still encircled by an invisible force wall, put there by alien visitors who crash landed. Mike Malone and Vikki are in peril. Who, or what, can help?

The second book in James Follett's 'The Silent Vulcan Trilogy' concluded by Nigel Anthony.

Abridged in 8-parts by Miranda Davis.

Producer: Richard Bannerman

Made for BBC 7 and first broadcast in 2004. Show less