We think we know Winston Churchill: the bulldog grimace, the ever-present cigar, the wit and wisdom that led Great Britain through World War II. Yet away from the House of Commons and the Cabinet War Rooms, Churchill was a loving family man who doted on his children, none more so than Randolph, his only boy and Winston's anointed heir to the Churchill legacy. Randolph may have been born in his father's shadow, but his father, who had been neglected by his own parents, was determined to see him go far. For decades, throughout Winston's climb to greatness, father and son were inseparable—dining with Britain's elite, gossiping and swilling Champagne at high society parties, holidaying on the French Riviera, touring Prohibition-era America. Captivated by Winston's power, bravery and charisma, Randolph worshipped his father, and Winston obsessed over his son's future. But their love was complex and combustible, complicated by money, class and privilege, shaded with ambition, outsized expectations, resentments, and failures.