When the TARDIS lands in a quarry on Earth, Sarah unearths what appears to be a fossilised hand, buried in one-hundred-fifty-million-year-old strata. Analysis shows the hand to be silicon-based and inert, but when Sarah begins to act as if possessed, the Doctor suspects that it may still be alive...
as The Doctor
as Sarah Jane Smith
as Kastrian Eldrad
as Eldrad (female form)
as Zazzka
as King Rokon
as Dr. Carter
as Professor Watson
as Miss Jackson
as Elgin
as Abbott
as Intern
as Guard
as Driscoll
