The cover has a nice unconscious carry of Catwoman.
There's a great Catwoman KO scene in this issue.
First, Catwoman and Joker get into a scuffle, but Joker has the upper hand and zaps Catwoman unconscious. Joker puts her in a cage and abducts her.
We later see Catwoman strapped to a hospital bed, where they try to mind control her. Some great Catwoman peril all around.
It continues into issue 570.