Sting of the Zygons

Blurb

Sting of the Zygons is a BBC Books original novel written by Stephen Cole and based on the long-running science fiction television series Doctor Who. It features the Tenth Doctor and Martha Jones. It was published on 19 April 2007, after the television debut of companion Martha Jones, alongside Wooden Heart and The Last Dodo.
The Zygons, who have previously appeared both on television and print, make a return appearance. David Tennant has stated in an interview that the Zygons were his favourite monsters in the classic series.