<p><b>From the bestselling author of <i>Killing Pablo</i>, a haunting and gripping account of the true-life search for the perpetrator of a hideous crime - the abduction and likely murder of two young girls in 1975 - and the skilful work of the cold case team that finally brought their kidnapper to justice.</b><br><br>In 1975, sisters Katherine and Sheila Lyon, aged ten and twelve, vanished from a shopping mall in suburban Washington, D.C. As shock spread, then grief, a massive police effort found nothing. The investigation was shelved, and mystery endured. Then, in 2013, a cold case squad detective found something he and a generation of detectives had missed. It pointed them toward a man named Lloyd Welch, then serving time for child molestation.<br>As a cub reporter for a Baltimore newspaper, Mark Bowden covered the frantic first weeks of the story. In <i>The Last Stone,</i> he returns to write its ending. Over months of intense questioning and extensive investigation of Welch''s spr