The name of the book is Countdown to Final Crisisand it was published by DC Comics . It falls in superhero category . The book has 51 issues . It is a Limited series . Darkseid,Donna Troy,Jimmy Olsen,Mary Marvel,Jason Todd,Harley Quinn,Holly Robinson,Karate Kid,Kyle Rayner,Superman-Prime,Monarch,Ray Palmer,Pied Piper,Triplicate Girl,Forager,Trickster,Duela Dentare the main characters of the book . This book was published in May 2007 - April 2008 . It used to be published Weekly
DC Comics publishes Weekly