Tinker is a bit of departure from Wen Spencer's previous books, which combined the SF and PI genres, since it can most easily be classified as a fantasy novel with elves and magic. However, what Spencer really has done is combine elements from Science Fiction (inter-dimensional travel via manmade gates that operate according to physics), and Fantasy (elves and animal spirit people from Asian mythology) with the action-adventure techno-thriller genre (everybody is after the gate technology). And all of it is written in her usual breezy somewhat humorous fast-paced style.

(Source: Baen)