Tinker

A bit of a cross-over book, Tinker has some science fiction elements, but it is primarily a fantasy.
Due to an inter-dimensional shift Pittsburgh has become a human enclave on Elfhome. The humans have a sometimes uneasy agreement with the Elves that limits the contact between the the two races. Tinker runs a junkyard in the city. Though small in stature and young, she is an explosive combination of brains, courage, and beauty. She will need all those qualities as she faces great danger and unexpected opportunities.
The story is interesting and well-written with lots of action. Really, the pace never lets up.
Good book. 4+ stars.