"This was not a dream" is an exciting book that tells the story of the mysterious circumstances that happened in the life of the main character. Readers rise with him on the waves of doubt, overcome by an uncontrollable desire to reveal a secret that will change their entire understanding of the world. The author successfully impresses upon the reader a sense of the unknown and a sense of foreboding, which forces one not to turn back to the last page. "This was not a dream" is a book that deepens the reader's connection with the mysterious world, giving new perspectives and discoveries.