Alex Graham

Tanzanite, a rare blue gem born in fire and revealed by lightning, is found only in the Merelani Hills of Tanzania. But now the death of a gem smuggler points to another possibility. A South American mine owned by Tabitha Metals may hold the find of a century. But why is it kept hidden from the world? Geologist Brian Graham can draw only one conclusion: the mine's untraceable wealth is used to fund terrorism. And he must reveal the truth. Brian heads to Colombia to check out mines there while his geologist daughter Alex and Tanzanian miner Mosi Ongeti start in Brazil. But their daring plan ends with a gunshot, and they are now pursued by the henchmen of a sinister, powerful arms dealer. In a high-stakes race across two continents, Alex fights to expose the mine before the man behind Tabitha Metals can stop her.

Explosive violence rocks Canada's Slocan Valley after the shooting deaths of three teenagers in a bombing attempt at the Keenleyside Dam. A joint U.S.-Canada military force locks down the Valley to protect Columbia River dams critical to both countries but martial law incites more violence. Geologist Alex Graham refuses to let politics stand in her way. She evades military patrols to slip into a restricted zone in her hunt for a silver mine to claim as her own. But her plans are derailed by an intentionally set fire that almost takes her life. Someone wants her out of the Slocan Valley. When Alex discovers a gunshot victim in an abandoned mine, she fears she could be next. But she's never been one to wait for trouble to come to her and she tracks a suspicious man seen once too often in the lonely mountains. All eyes are on the dams, but the true threat lies elsewhere.