Reign - Season 1 May 2026

: Joyful Girl Productions, CBS Television Studios , Warner Bros. Television, and Whizbang Films.

: Primarily filmed in Toronto, Ontario , with key exterior and pilot scenes shot in Ireland (notably Ashford Castle). Main Cast Adelaide Kane Mary Stuart, Queen of Scots Toby Regbo Prince (Dauphin) Francis Torrance Coombs Sebastian "Bash" de Poitiers (Francis's half-brother) Megan Follows Queen Catherine de' Medici Alan van Sprang King Henry II of France Anna Popplewell Caitlin Stasey Lady Kenna Celina Sinden Lady Greer Jenessa Grant Lady Aylee Rossif Sutherland Nostradamus Season Synopsis Reign - Season 1

: Laurie McCarthy , Stephanie Sengupta , Brad Silberling, and Frank Siracusa. : Joyful Girl Productions, CBS Television Studios ,