George and the Unbreakable Code

In the fourth book of the George’s Secret Key series by Stephen and Lucy Hawking, George and his friend Annie embark on a thrilling cosmic adventure to uncover the source of bizarre occurrences on Earth. With banks dispensing free money, supermarkets unable to charge for goods, and aircraft grounded, the duo discovers that the world's most powerful computers have been hacked. Determined to solve the mystery, George and Annie set off to explore deeper into space than ever before.