The secret of life Rosalind Franklin was one of the most influential chemists of the 20th century. An expert in the use of X-rays, she unveiled one of Nature's best kept enigmas: the structure of DNA, the molecule that ensures that all of us, humans, animals, plants and other organisms, look like our progenitors. Rosalind Franklin's life is an example of improvement and work, having contributed to the discovery of the secret of life. Both the register of the narrative and the style of the images are appropriate for schoolchildren between 8 and 11 years old. The text and the images make sure to deal with pedagogical threads that traverse the characters' scope of activity, both for family readings at home and at school, supporting the educational program. Additionally, throughout the narrative the reader will find all the information necessary to appropriately situate the figure in a socio-historical context.