This is the 4th book of The Adventures of Danny Hoopenbiller sci-fi series, written by young author David T. Lee. One year after the terrifying invasion of the dinosaurs, Danny settles down. He believes the dinosaurs are long gone. HE IS WRONG. As a result of his trip to the past, the dinosaurs have evolved into a frightening new species. MARTIANS. A prophecy from Thomas Edison deepens the mystery of the oppressors' threat to destroy humankind. The President of the United States (POTUS) unveils a new invention to battle the aliens. Unknowingly, Danny and Jack (his son) rescue Albert...

This book is the 3rd book of The Adventures of Danny Hoopenbiller series. Published on November 2013, this first edition was written and illustrated by David T. Lee at age 9. It is the sequel of "Danny and the Trip to Outer Space" and "Danny and the Portal of the World." This book contains 19 chapters, 17,000 words and 7 full page illustrations. Full color illustrations are available for view on his author blog as listed below. It is suitable for kids 7-12. Summary of the story: The impossible has happened. Dinosaurs, vanished 65 million years ago, have come back to life. Nations have to...