Download or read book Invincible #23 written by Robert Kirkman and published by Image Comics. This book was released on 2005-06-01 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mark and Amber have come to a new understanding, things are different and now they're left wondering what's next for them. Meanwhile, something is happening in deep space. Luckily, Allen the Alien is on hand to deal with it, but will he be enough?