The King's Seal (The Magicians of Venice) by Amy Kuivalainen

Destiny speaks in whispers. Magic answers in storms. Dr. Penelope Bryne never imagined her archaeological expertise and obsession with finding evidence of Atlantis would thrust her into an ancient war with a dark cult. Now, with newfound powers coursing through her veins and humanity's fate hanging in the balance, she must embrace her destiny not only as the Archivist but as a magician in her own right. With her beloved Alexis at her side, Penelope races across Europe following ancient clues to find the legendary ring of King Solomon—the only artifact powerful enough to banish Thevetat and end his cult forever. But with each step closer to the ring, Penelope's untamed abilities grow more unpredictable and dangerous, and ancient grudges threaten to tear the magicians apart just when unity is crucial. As unexpected allies emerge from the shadows and enemies lurk behind friendly faces, one truth becomes clear: the bonds forged in battle and love may be their only way to survive what's coming. Read more