Jun 09, 2017 AM EDT - Jaskiran Singh

‘Reign’ Season 4, Episode 16 (Series Finale) Spoilers, Promo Revealed: Mary’s Fate Is Revealed In ‘All It Cost Her…’

“Reign” Season 4 finale airs next week. The CW historical drama comes to an end with Episode 16 titled “All it Cost Her…” wherein Mary makes some decisions that changes the history forever. Read further for the details.