A definitive new biography of one of modern Scotland’s most consequential figures, Scotland’s Lost Leader: The Life of Donald Dewar by Mark Peel offers a vivid portrait of the man who helped shape the nation’s return to self-government. Drawing on extensive research, Peel traces Dewar’s journey from post-war Glasgow to the forefront of British politics, revealing the convictions, compromises and quiet determination that defined his leadership. Central to the book is Dewar’s pivotal role in securing devolution and guiding the birth of the Scottish Parliament. Peel explores the political battles, personal costs and enduring ideals behind that achievement, presenting a principled campaigner whose belief in democratic renewal never faltered. The book will appeal to readers of modern Scottish history, students of British and Labour politics and general non-fiction audiences interested in leadership and constitutional change.