Sonia, Pedro and their classmates are baffled. Mysterious messages keep
popping up on their computers, on their mobile phones, on websites they visit,
even on a radio programme they listen to. It is a voice from the past but who
is trying to contact them from out of history, and why? Follow the clues from
their school in modern-day Brazil through the ages to ancient Egypt, to a
medieval wizards castle laboratory and to the ships that sailed from Europe to
discover the New World. Can you solve the History Mystery? By Hans Christian
Andersen award-winning author Ana Maria Machado.

About the Author
Ana Maria Machado is one of the most significant childrens book authors in
Brazil. She has written more than 100 books. She started her career as a
painter then worked as journalist for Elle magazine in Paris and for the BBC in
London. In 1979, she opened the first childrens literature bookshop in Brazil.
In 2000, Ana Maria Machado was awarded the Hans Christian Andersen Award for
her life work, the most significant international prize for childrens
literature.