It is a mini-series . The book namedBrightest Day was published by Vertigo . Tricksterare the main characters of the book . Peter Tomasi,Keith Giffen,Geoff Johns,Bill Mantlowrote the book Brightest Day . Brightest Day is of superhero genre . It used to be published Bimonthly . This book was published in (vol. 2)  October 1972 – October 1975
The book is by Keith Giffen