Kiki Strike:
Inside the Shadow City
by Kirsten Miller
Bloomsbury Children's Books, 2006
This is the first book in the Kiki Strike series. It is a mystery/action adventure novel for older children and young adults, with the protagonists themselves ranging from about 12-14. It is primarily written for girls, but not in a princesses and fashionista sort of way. Despite the princesses and the bits about fashion. Seriously, boys will enjoy it too.
Ananka Fishbein is a 12-year-old history nerd; this would make her an outsider at most schools, but thanks to a bequest from her very odd grandfather (he's dead, but he'll be making an appearance later), she is also attending an exclusive private school in New York City. Poor(ish), weird, and smarter than your average tween, she is not one of the popular kids.
Which bothers her sometimes, but from the age 12 on, she also happens to be involved in…