Reign - Season 4 - Eps 15: Blood in the Water
Mary’s life hangs in the balance — Childbirth threatens to take Mary’s life, which leaves her and her unborn child’s safety in jeopardy. Elizabeth discovers that someone in her inner circle was the cause of the death of someone close to her.
About Reign

Title: Reign
First Air Date: 2013-10-17
Last Air Date: 2017-06-16
Status: Ended
Rating: 8.055/10 (from 831 votes)
Language: EN
Seasons: 4
Total Episodes: 78
Network: The CW
Genres: Drama
Production Companies: Warner Bros. Television, World 2000 Entertainment, CBS Studios
Synopsis
Mary, Queen of Scots, faces political and sexual intrigue in the treacherous world of the French court.
Cast

Adelaide Kane
Mary Stuart

Megan Follows
Catherine de' Medici

Celina Sinden
Greer

Craig Parker
Stéphane Narcisse

Jonathan Goad
John Knox

Rachel Skarsten
Elizabeth I of England

Spencer MacPherson
Charles IX of France

Ben Geurens
Gideon Blackburn

Will Kemp
Henry Stuart, Lord Darnley

Daniel Matmor
Oliver