"Double trouble" by Karl Jacobi is a fascinating book about the adventures of two twins who have exchanged roles for one day and now find themselves in incredible situations. Will they be able to uncover their mistake and save themselves from the inevitable consequences of an identical exchange? A quick and unpredictable event on each page will capture the reader from the first lines and will not let go until the final solution. "Double trouble" is a book that teaches us to take responsibility for our actions and value our possessions.