A Very Expensive Poison

1 November 2006. Alexander Litvinenko is brazenly poisoned in central London. Twenty two days later he dies, killed from the inside. The poison? Polonium; a rare, lethal and highly radioactive substance. His crime? He had made some powerful enemies in Russia. Based on the best part of a decade's reporting, as well as extensive interviews with those closest to the events (including the murder susp...