Reign 2×05 “Blood for Blood” – Tensions between Protestants and Catholics escalate when bloodshed at a Protestant service causes an already concerned Mary (Adelaide Kane) and Francis (Toby Regbo) to intervene on the eve of Greer’s (Celina Sinden) wedding. Bash (Torrance Coombs) and Leith (Jonathan Keltz) lead a search for the guilty that reveals a surprising secret about Castleroy (guest star Michael Therriault) that could destroy his union with Greer. Meanwhile, Francis receives an unwelcome gift from his dead father. Kenna (Caitlin Stasey) discovers a sex journal, with clues leading to the best lover at court, who just might be a match for Lola (Anna Popplewell). Megan Follows and Sean Teale also star. Norma Bailey directed the episode written by P.K. Simonds and Nancy Won (#205). Original airdate 10/30/2014.