Just finished BN Catwoman and I though it was a good read. But that's only cause a) I'm a Batfan and B) I also read Gotham City Sirens. If neither of the above apply to you then save yourself the scratch. It does have a great cover by Adam Hughes though so that's icing on the cake. For those that still want to know what happens.....
Blackmask comes back as a BL and hunts down Selina only to find that she odes not fear him so he finds her unappetizing. BM decides to go after her sister who's in the looney bin to try to rile up Selina who on the way lights a flare and Ivy and Quinn show up (no foolin!). Ivy and Quinn keep BM busy while Selina finds her sister, there's showdown and Ivy summons a giant plant to and it eats BM (No fooling!) Selina's sister jumps a nun and vows to destroy Catwoman
I´m not that much of a fan, but I enjoyed it too.
You read BN: Power of Shazam? That one´s awesome too.