THE ELEMENTALS Twenty years ago, Dr. Leandro Vega uncovered the legend of the first elementals — five children claimed by lightning, water, flame, earth, and wind. He believed it. Two decades later, his secret African compound is producing elemental soldiers. Now his hacker has flagged two new signals — Aaliyah Williams, 15, dancer from Atlanta, and Noah Johnson, 17, honor student from London. They were promised a prestigious academy. They were lied to.

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