By Wally Lamb about a man who reconstructs five generations of family history.When forty-seven-year-old high school teacher Caelum Quirk and his younger wife, Maureen, a school nurse, move to Littleton, Colorado, they both get jobs at Columbine High School. In April 1999, Caelum returns home to Three Rivers, Connecticut, to be with his aunt who has just had a stroke. But Maureen finds herself in the school library at Columbine, cowering in a cabinet and expecting to be killed, as two vengeful students go on a carefully premeditated, murderous rampage. Miraculously she survives, but at a cost: she is unable to recover from the trauma. Caelum and Maureen flee Colorado and return to an illusion of safety at the Quirk family farm in Three Rivers. But the effects of chaos are not so easily put right, and further tragedy ensues.