'Reign' Season 1 finale sneak peek: See a photo from 'Slaughter of Innocence'

reign-slaughter-of-innocence-season-1-finale.jpgThe king's madness reaches a fevered pitch in the Season 1 finale of "Reign," "Slaughter of Innocence." Zap2it has an exclusive photo from the episode, which will see Francis and Mary taking charge and making brutal choices that will change the fate of France.

But Francis and Mary might not save the day -- there's also The Darkness to deal with, the imminent arrival of Lola's baby, and Mary's uncle, the Duke of Guise.

The "Reign" finale airs Thursday (May 15) at 9 p.m. ET/PT on The CW.
Photo/Video credit: Sven Frenzel/The CW