"A Royal Affair" is a historical novel by Rebecca Dean that explores the tumultuous relationship between Queen Caroline of Denmark and her physician, Johann Friedrich Struensee. Set in the 18th century, the story delves into the political intrigue and personal struggles within the Danish royal court, highlighting the challenges faced by Caroline as she navigates her marriage to the mentally unstable King Christian VII. The novel vividly portrays the impact of Struensee's progressive ideas on Danish society, as he attempts to implement reforms while grappling with his feelings for Caroline. Their passionate affair unfolds against a backdrop of courtly conspiracies, ultimately leading to dramatic consequences for both characters and the kingdom.