All Mirrors And All Suns — Robin Hardy

When a poisoner attempts to murder Surchatain Ares-again-Ares decides the time has come to step down from the throne and go underground to find out who is trying to take over the province. In his clandestine searches, he discovers a hidden room containing a vast cache of gold. While Ares is preoccupied with establishing a link between the gold and his would-be assassin, Henry is experiencing his own torments in getting his betrothed, Ares' daughter Sophie, to agree to a wedding date. However, prompting her to act turns out to be a trivial matter compared to his discovery that the task of arranging his nuptials has been assigned to Westford's chief tormenter: his sister Renée. All Mirrors and All Suns is the eighth book of the Latter Annals of Lystra, but new readers may jump into the series at any point. Robin Hardy is the author of The Annals of Lystra, the Streiker Saga, the Sammy Series, The Idecis, Padre and its sequel, His Strange Ways, and Unknown Name, Unknown Number: A Wimsey