When I read this book, Sonja Blue was not yet the heroine of a series of books. I thought I was reading a one-off and was sad because I LOVED Sonja. I loved Sunglasses After Dark. They've redone the covers now that it's a series, and they're wonderfully retro, but the one I first read had the cover pictured.
Sonja's a vampire who hunts other vampires. That's not a particularly new idea (Blade, Vampire Hunter D), but I got a kick out of Sonja's particular brand of kick-ass. She stood out from all those katana-wielding, tramp-stamped hunter chicks you see nowadays. Sonja is ... complicated.
Nancy Collins sounds like an interesting person too. I hope I run into her some time at SDCC.