When Wren Valerie, A Retriever who has a gift for finding things, is hired by a rich client to reclaim a spell-infested cornerstone, she must call upon her frieends--ademon, a mage, and her business partner--when her mission goes terribly wrong, resulting in the release of a deadly ghost.

While dealing with her complicated relationship with Sergei, retriever Wren Valere must choose sides when her fellow lonejacks, organizing a rebellion against the Mage's Council, are at risk.

The Cosa Nostradamus is in disarray; the Truce that has kept the city peaceful for decades has been broken, and magical Manhattan is at war.In the midst of all this, Wren Valere is left without her partner Sergei, whose past loyalties - and betrayals - keep him from her side just when she needs him the most. Wren wants nothing more to do with violence. But for her community - human and otherwise - to survive, it's time for the Cosa to take the battle...