The Enigma Strain : An explosion rocks Yellowstone. A strange disease begins to spread. A supervolcano threatens to erupt. And none of it was an accident.A reclusive Yellowstone park ranger is forced into action, teaming up with a beautiful woman from the CDC. Harvey Bennett isn't a trained killer, but he'll fight for what's right. And he'll do anything to take down the terrorists behind the attack. From Yellowstone across the American landscape, Harvey and Juliette must do what it takes to survive, before it's too late. The Amazon Code : Deep within the Amazon rainforest, a secret lurks. A secret that could change the world. ...A secret worth killing for. When her company discovers a remarkable hidden message in the dreaming brains of her subjects, Dr. Amanda Meron unknowingly invites disaster unto her company. The clues seem to be pointing her to one of the remote places on the planet: The Amazon Rainforest. When Harvey "Ben" Bennett gets a hint that the nefarious organization he's been searching for has turned up in Brazil, he and his new girlfriend Juliette Richardson race to the jungle to discover what they're after â?? and hopefully stop th