Today saw the release of Frank Miller, Brian Azzarello, and John Romita Jr.'s The Dark Knight Returns: The Last Crusade, a prequel to the classic story which picked up with a Batman who had long retired. So, why did he give up being a hero? Well, upon realising that his age is catching up to him, Bruce comes to the conclusion that new Robin Jason Todd (who takes way too much satisfaction in hurting criminals) is still a long way off from being able to take over as Gotham City's new protector. 

After The Joker escapes from Arkham Asylum, a critically wounded Batman pleads with Jason not to go after the Clown Prince of Crime, but he disobeys his mentor and is brutally murdered as a result. 

Honestly, there's a lot more to The Dark Knight Returns: The Last Crusade that we've told you about here as if provides a fascinating insight into the relationship between Batman and Robin, showing us that breaking down and
Source: COMIC BOOK MOVIES