But the past casts one hell of a long shadow.
An old bargain has placed Harry in debt to Mab, monarch of the Winter Court of the Sidhe, the Queen of Air and Darkness--and she's calling in her marker. Dresden still owes her two favors, and its time to pay them off. Just one small favor he can't refuse--one that will trap Harry Dresden between a nightmarish foe and an equally deadly ally and strain his skills and loyalties to their very limits.
It figures. Everything was going to well to last...
Titre original : The Dresden Files, book 10 : Small Favor (2008)