Currently available on 2 streaming services.

Reign - watch online: stream, buy or rent

You are able to buy "Reign" on Apple TV, Amazon Video as download.

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
Manolo Cardona
Príncipe Thomás de Portugal