Mercedes Lackey 
Changes [EPUB ebook] 

A Kingdom under threat… After an assassination attempt is made against the King within palace walls, Herald Trainee Mags is selected by the King’s own herald, Nikolas, to assist him with a special assignment: seek out the infiltrators and find out where they came from-and who they work for. Deep in disguise behind the counter of a pawnshop, Nikolas and Mags observe the crooked clients and seedy neighbourhood. hiding in the shadows and scrambling over rooftops, Mags chases down leads, searching for anyone who abetted the would-be assassins. But his new role turns out to be far more dangerous than Mags had ever considered, for the enemy agents are willing to do anything to undermine the kingdom, and bring Valdemar to ruin.