When Jessie and her friend Pete sneak into August Erasmus's lab, they mean to rescue his abused animals. Instead they find a boy in a cage. Horrified, they set him free, and Jessie promises to hide him. The strange, pale boy is August's son, Lucan. He knows he's strange. He can't bear the sun, sleeps by day, bursts with energy by night, and can only digest raw blood. Like August, he has the family disease: nothing sinister about it. But sinister does...