The Thunder of Stones - Andrea Penrose

Athens. A city where the ancient past and present tangle in a web of intrigue. As Saybrook and Arianna seek to unravel the truth about her brother’s disappearance while on a clandestine mission for the Crown, they find themselves threatened by shadowy enemies—and a mysterious ancient talisman . . .The winds of change have brought great joy to Lady Arianna and Saybrook, who have recently welcomed an infant son to their family. They are still adjusting to their new life when a letter arrives from Arianna’s dearest friend and former comrade-in-chicanery inviting them to a gala 50th birthday celebration in Switzerland. With the blessing of their surgeon friend, they decide to make the trip, only to find themselves once again drawn into a dangerous web of political intrigue that may ignite war