Thomas Chatterton (1752-1770), apparently a suicide at 18, posthumously astonished literary England when he was revealed as the author of a sequence of famous and influential "medieval" poems he claimed to have discovered. An authentic talent as well as a literary counterfeiter, he is the guiding spirit of Peter Ackroyd's brilliant novel. In today's London, a young poet and an elderly novelist engage the mystery of Chatterton by trying to decode the...