What made Ronald Reagan tick? What was the secret to his greatness, the source of his influence, the key to his character, the strength behind his leadership? And why does it matter to the nation today? Just the mention of his name still evokes deep admiration and affection among Americans of every stripe, on both sides of the aisle. Many have previously sought to capture the essence of this very public figure often called "mysterious and unknowable." But now, as James Rosebush tells Reagan's story from first-hand experience, we come closer to understanding the heart of this great American.