Description
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...
Casts:
Tom Baker
Elisabeth Sladen
Stephen Thorne
Judith Paris
Roy Pattison
Roy Skelton
Rex Robinson
Glyn Houston
