Sins of the Son.Charles Xavier's son David has been seemingly abducted. Charles, Storm, Cyclops, & Jean Grey track him down in Scotland, and it turns out that he suffers from multiply identity disorder, and that his hidden malicious personality, (born out of his hatred and agony for his father and his evil will), called Lucas, is overwhelming him. Meanwhile, Kitty and Kurt have some not so good adventures while they're ill with the flu, as Kurt teleports involuntarily as he sneezes in his sleep.