Priestess Dreaming: Otherworld/Sisters of the Moon, Book 16

We're the D'Artigo sisters: savvy half-human, half-Fae operatives for the Otherworld Intelligence Agency. My sister Delilah is a two-faced werecat and a Death Maiden. Menolly is a vampire married to a gorgeous werepuma. And me? I'm Camille, a Moon witch married to three gorgeous husbands, and I'm about to journey through the veils to search for a long-lost legend.... With the war in Otherworld raging, the Queen of Shadow and Night summons me to her court. Aeval orders me on a quest through the mists to find an ancient ally of hers. I am to seek out The Merlin and wake him from his long sleep. Surrounded by danger on all sides, with Morgaine and Bran along for the journey, I must pray they are allies rather than enemies, as we undertake a perilous search through the labyrinth of time....