Tinker (2003)

Tinker is an eighteen year old girl & genius who lives in the city of Pittsburgh in the near future. Thanks to a side effect of the hyperphase gate build by the Chinese, Pittsburgh travels between the two worlds, Elfhome and Earth. One day Tinker saves an Elf from some dogs who have been magically enhanced into greater, more fearsome beasts, and that starts the greatest adventure of her life.

The book is a mix of adventure and romance, highly entertaining and very fast-paced. From the first page the book will grab the reader and will never let go until the last page has been read. A book that wants to tell a good story with interesting and likable characters, and succeeds.