Nikki Tesla and the Traitors of the Lost Spark (Elements of Genius #3)

Someone who goes by the name of "V" is planning to unleash a lethal virus that could destroy the human race, and it is up to Nikki Tesla and her friends from the Genius Academy (which has been blamed for an international incident and shut down), to uncover the villain (who is closer to them than they realize) and find a way to stop the biological attack--an effort that will cost Nikki her life.