Can someone please spoil Bruce Wayne, Murderer?

I read one of the volumes of the arc(or one of its ensuing arcs), and I found it to be fairly interesting. I’d like to find out what happend, as I don’t have the money to buy the entire story or patience to wait for the library to have all of the volumes.

The gist? Cain, martial artist and assassin extraordinaire, was hired by Lex Luthor to deal with Batman … or Bruce Wayne. I forget which. The hitch was that Cain was aware of the secret identity… and being almost as cool as Batman himself, took the opportunity to frame Brucey and screw with the Batcave’s systems.