The Man In The Iron Mask by Robie H. Harris

In 17th-century France, aging musketeers uncover a secret: a political prisoner hidden behind an iron mask is the unknown twin of the reigning king. Caught between loyalty, justice, and personal honor, they and other conspirators wrestle with a plan to free and substitute him to end the monarch’s tyranny. Intrigue, betrayals, and shifting alliances test their bonds, leading to daring plots, moral compromises, and tragic consequences that force each man to choose between friendship and duty.