Book 5 in the 'Mission Top Secret' series of six titles. The Centauri Network, an international computer-linked association of children, helps to solve the theft of the rarest horse in England: the very last of the Anglo-Polish breed. The Network is connected by the world's most powerful computer, which is housed in a farm in the Australian outback. The ABC TV series of the same name is a co-production of Grundy Australia Productions and Quartier Latin Productions for the European Children's Film Corporation.