When a skull is found during building works at Knightsbridge, London, the work is halted in order that a full archaeological dig can proceed. The diggers delve deeper, finding more skulls, but also finding some form of tube-like shell made of a ceramic like material. The Ministry of Defence believe it to be an un-exploded bomb, but when they manage to dig inside the shell, dead insect-like creatures are found. The MOD continue with their story, but Professor Quatermass's theory that the insects are Martians who visited Earth over five million years ago is proved to be correct with drastic consequences. Written by Rhino rhino@blueyonder.co.uk

Zero-X, a manned exploration mission crashes during lift-off on its maiden flight. Two years later an investigative committee finally concludes sabotage, and decides to call on the services of International Rescue to oversee security at the impending second launch. The second Zero-X successfully reaches its destination, but encounters unexpected hazards, ultimately leading to another call for assistance on its return to Earth. International Rescue respond, and once again Thunderbirds are GO! Written by Raj Rijhwani raj@courtfld.demon.co.uk

The International Rescue team is faced with one of its toughest challenges yet, as the revolutionary lighter-than-air craft Skyship One is hijacked while on her maiden voyage around the world. Against backdrops including the Statue of Liberty and the Sphinx, Lady Penelope, Parker, Alan and Tin-Tin fight the hijackers from on-board, while the rest of the team tries to stop the airship crashing into a missile silo. Written by Fridolin Hobbes dvdgermany@yahoo.co.uk