Turns out the Athena Force books are what they call a "Continuity Series" where every month a new title comes out. Each book is about a new hero/heroine, but there's a continuing thread that ties all the books together (in this case, they mystery of the death and who's after the school). Each book is written by a different author. You can find the list of all the "Athena Force" books up on eharlequin. Since I figured it out late, I had to go and get a bunch of them at the used book store. I finally got them all and I'm very excited to read them. Though I think Justine Davis's will be best!

Ciao!