Freefall (novel)
 Freefall (sometimes known simply as Tunnels 3) is the second sequel to the book Tunnels and is the third book in the series by Roderick Gordon and Brian Williams. Contrary to a number of erroneous comments in the media Freefall was not the final novel in the Tunnels series and the fourth book Closer was published by Chicken House in the UK on 3 May 2010.