NEW YORK (Reuters) – The son of actor Oscar-winning actor Michael Douglas could face life in prison for selling large amounts of an illegal drug over a three-year period before his arrest late last month, court records show. Cameron Douglas, 30, a sometimes actor who appeared with his father and grandfather Kirk Douglas in "It Runs in the Family," is accused of selling tens of thousands of dollars worth of methamphetamine, according to a complaint unsealed this week. Douglas was arrested at a Manhattan hotel on July 28, and had charges against him read in Manhattan federal court the next...