Download or read book Invincible #13 written by Robert Kirkman and published by Image Comics. This book was released on 2004-05-01 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is nothing below him. There is nothing above him. For as far as Mark can see, there is nothing all around him. What happened to Mark last issue to put him in this place? What is this place? And what does it have to do with his future as a superhero?