Medusa, torn from orbit around Proxima Centauri by a comet, was sent careering through space. Ages later, with Medusa...

Surviving the crash, Adam and Shem steal a police car and go on the run. Supreme Councillors Octavia — head of securi...

Adam and Shem shut themselves inside an ancient defensive manor and take the curator hostage. Octavia activates the n...

The proton storm forces the Nemesis to return to Medusa, with Liz and Rudi held hostage aboard. Fulvia tries to retur...

While Shem repairs her ship, Fulvia allows herself to be used as a test subject for a human thought-transference mach...

Earth hostage Dr Rudi Schmidt is forced to perform menial work, on the surface and in the city, but rebels—and other ...

Although Liz is ideally suited to captain a Medusan spacecraft, her attitude to men isn't appreciated. Octavia has he...

Adam and Shem hatch a plot to convince Fulvia to release the human hostages while still allowing the refugee Medusans...

Rudi labours on the surface when rain starts reacting catastrophically with toxic waste in the soil, threatening the ...

Prof Evans visits Medusa to discuss the return of the hostages with the President — who they find apparently dead. Li...

On the run, Adam and Shem find shelter in an apartment, but are seen and reported. Adam is arrested, but Shem is resc...

At Octavia's request, Liz — with Rudi — investigates the abandoned records section. Rudi's searching for a way off Me...

Agreement now reached on the exchange of hostages, the two ships head off from Earth and Medusa. But a deadly ancient...