Once a creature is extinct, it''s gone for ever, isn''t it?

Not any more - as a butterfly from the past proves. The physicist mother of Kizzy Rye and Fraser Rye has invented an amazing time machine that can travel back into the past, snatch a plant or animal now extinct and bring it back into the present.

It''s a wonderful achievement, a real scientific breakthrough. But the machine - ''Rye''s Apparatus'' - has a horrifying potential. Suddenly Kizzy and Fraser find themselves caught up in a terrifying spiral of events - events that lead finally to a monstrous demand from a sinister and violent organization...

WINNER OF THE 1995 EARTHWORM AWARD, 7-11 YEAR-OLD CATEGORY