Professor Ian Hood (Patrick Stewart) and his bodyguard Rachel Young (Ashley Jensen) have been tasked with investigating cases of science abuse throughout the UK. When a police chase leads to a field where almost 30 fetuses are buried, Hood suspects that ""Gepetto"" - a rogue clone maker - is at work in the country. They soon discover that not only must they try to find and stop Gepetto, but they must also locate a young pregnant girl who is carrying one of the cloned fetuses, and whose life is in danger from a complication with the pregnancy. They are not the only ones searching for the girl, though. One of Gepetto's men, a millionaire, and the girl's abusive ex-boyfriend all have their own reasons for wanting to find her.
When a mysterious lethal virus claims the life of a crypt worker, Professor Ian Hood (Patrick Stewart) must contain the outbreak before a global pandemic ensues. Together with a group of volunteer scientists, he succeeds in locating the source and containing the outbreak, but Professor Ian Hood (Patrick Stewart) realises that his work is only just beginning when Rachel Young (Ashley Jensen) is put at risk.
Professor Hood (Patrick Stewart) meets an old friend who believes his research into global warming is being sabotaged by persons unknown. He subsequently vanishes, having apparently destroyed all his work - and a few equations are all the clues he's left behind. The professor takes on the challenge of solving the puzzle, but he's forced to call on Rachel (Ashley Jensen) for protection as the mystery thickens.
In this last episode Professor Hood (Patrick Stewart) sets out to discredit a doctor's claims that one of her patients has been cured of cancer by drinking ordinary spring water, convinced she's perpetrating a cynical hoax. To his surprise, she seems every bit as baffled and sceptical as him, and readily offers to help investigate the case. Unfortunately, just as an explanation seems within reach, she is found dead, having apparently committed suicide.
