Honestly, I never *loved* Kay, but the stories were well-plotted, well-written, there was a good amount of technical detail, and I was interested in the peripheral characters.
The Temple Gault thing was good and convincing and scary at first, but then the whole EVERY SERIAL KILLED YOU HAVE EVER MET WERE ALL HANGING OUT ON LIEK THE INTERNETS OR SOMETHING AND IT IS ALL A PLOT!1!!!1!!
Re: THIS COMMENT CONTAINS SEMI-SPOILERS.
The Temple Gault thing was good and convincing and scary at first, but then the whole EVERY SERIAL KILLED YOU HAVE EVER MET WERE ALL HANGING OUT ON LIEK THE INTERNETS OR SOMETHING AND IT IS ALL A PLOT!1!!!1!!