Vol. 42, Pirates Vs. CP9Book - 2010
"The Straw Hats have infiltrated the Tower of Justice to save Robin, but they still need a special key to release her. One of the CP9 assassins holds the right key, but Luffy and his crew may have to defeat them all. Can the Straw Hats thwart CP9 and rescue Robin?--P.  of cover.