Jessica Ennis: Unbelievable - From My Childhood Dreams To Winning Olympic Gold: The life story of Team GB's Olympic Golden Girl

The full story of the gold medal-winning 'face of the Olympics'.

Jessica Ennis started out as an ordinary Sheffield schoolgirl, one that other young people can readily relate to. The daughter of a Jamaican painter-and-decorator from Sheffield and a social care worker from Derbyshire who had shown promise themselves at schools athletics, she took the genes she was given and converted them into gold.

Jessica has turned herself, by dint of her multi-disciplined skills, courage and commitment, into one of the greatest British athletes of the modern era, decorated with awards and titles and an MBE at the age of 26. A psychology graduate, her mind is as finely tuned as her body. Medals and personal bests pepper her records to show that during competition she doesn't baulk under pressure but constantly lifts herself out of her comfort zone to be the best in the world.

The current British national record-holder for the heptathlon, the indoor pentathlon, the high jump and the 100m hurdles is higher, faster and stronger than the competition. Her crowning achievement was to triumph in the heptathlon at the London 2012 Olympics with the incredible British and Commonwealth record score of 6,955 points. Yet she remains the same modest Yorkshire girl who loves her fiancee, her Labrador, Sheffield United, and Henderson's Relish.

Jessica Ennis lends a human face to consummate sporting achievement. Her sunshine smile in victory, her courage to come back from bitter setbacks and injury, her passion to excel, have endeared her to young people everywhere and made her a heroine, a motivator and an inspiration. In UNBELIEVEABLE Jessica reveals the story behind her journey.