Books like Batman Arkham Knight
Marv Wolfman
Batman Arkham Knight is 368 pages, about 6 hours 45 minutes at 250 words a minute.
12 books to read next
How long each takes
Batman 5.9 h 
Batman 3.5 h 
Batman 6.5 h 
Batman 7.3 h 
Batman 1.8 h 
Identity Crisis 5.3 h 
Secret Wars Omnibus 9.1 h 
Batman 3.8 h 
Batman 2.1 h 
Batman & Robin, the Deluxe Edition 3.2 h 
Full Circle 2.3 h 
Batman 3.3 h Bar height shows length. Estimated at 250 words a minute.