Burning Bridges by Laura Anne Gilman. Gilman's fourth in her Retrievers series manages to bridge her first three into a conflict-ridden conclusion that leaves more questions than answers. The plot arc follows on from the events in Bring It On as the disagreements between Nulls, Council and fatae clash with the mysterious Silence, taking the inhuman community into an all-out street war complete with riots, protest marches, and the inevitable grisly murders. Wren and the Lonejack community have plenty on their hands without the relationship problems she's having with partner Sergi and his growing addiction to Current. It's an unevenly paced novel that fans of the series should enjoy mostly for the question of what comes next. Gilman has set up the grounds for a nicely complicated fifth entry without given any great hints as to how it will all end up. If you've followed thus far, it's worth picking up.