The Serpent’s Curse by Tony Abbott

Wade, Lily, Darrell, and Becca may have found the Copernicus Legacy’s first relic—a beautiful blue stone named after the constellation Vela—but they have lost much more than they have gained. Darrell’s mother, Sara, has been kidnapped by Galina Krause, the conniving leader of the Teutonic Order, who hopes that the renowned academic will lead her and her minions to the next relic.

That means the stakes couldn’t be higher for the Kaplan kids, who trek across the cold wilderness of Siberia, along the winding canals of Venice, and through the streets of Moscow’s Red Square in search of their beloved family member and the sought-after relic called the Serpens… Read more.