Alternate worlds exist. Twins Jan and Jani discover they can create Apertures to other alternities when they are assaulted by explorers from an evil Pankan empire of an alternate Earth. Their talent is much more powerful than that of anyone else, leading the murderous Pankans to make numerous attempts to capture them in order to learn their secret. The Pankans are also planning on conquering our Earth and only the twins can possibly stop them. A new kind of war begins. Finding more aperture creators is an urgent necessity if the United States intends to win.
Used availability for Darrell Bain's Apertures
March 2011 : Canada Paperback
September 2017 : USA, Canada, UK Kindle edition