Pierce Brosnan as King Louis XIV

Kaya Scodelario as Marie-Josephe D'Alember

Benjamin Walker as Yves De La Croix

William Hurt as Pere La Chaise

Julie Andrews as Narrator

Fan Bingbing as Mermaid

Pablo Schreiber as Dr. Labarthe

Ben Lloyd-Hughes as Jean-Michel Lintillac

Rachel Griffiths as Abbess

Paul Ireland as Benoit

Crystal Clarke as Magali

Kaya Blocksage as Duchesse de Fontages

Kasia Kaczmarek as Sister Constance

Tom Morton as First Musketeer

Tiffany Hofstetter as Mother

Jessica Clarke as Madam Devereaux

Virginia Bowers as Marie-Josephe's Mother

Marc de Panda as Intendant of the King

Jorja Lindsay as Ella

Diane Duquesne as Courtisane

Jean-Baptiste Sagory as Nobleman 2

Crispin Freeman as Musketeer #6