Back in April of 2012, the US Justice Department filed an antitrust lawsuit against Apple and a number of publishers for allegedly colluding to raise the price of e-books on the iBookstore.
The original suit targeted five publishing companies; Hachette, HarperCollins, Macmillan, Penguin and Simon & Schuster. While Macmillan and Penguin were initially keen on fighting the allegations, all five publishers have since settled with the US Justice Department.
As such, Apple is the last man standing.
As part of its investigation into Apple's actions, the Justice Department collected evidence which it claims demonstrates that Apple was the "ringmaster" in a price fixing conspiracy.
According to the New York Times, which