Plot summary
Queen Mary and Bash are captured by King Henry's men after a week of being on the run together. They are brought back to the castle, where Queen Mary tells a disbelieving Prince Francis about Nostradamus's prophecy.
King Henry threatens to execute Bash if Queen Mary won't marry Francis. Queen Mary counter-proposes that Bash be legitimized as King Henry's new heir and she marry him instead; if King Henry agrees, Queen Mary will claim the English throne as King Henry wants. As this would require an annulment of King Henry and Queen Catherine's marriage, and would turn Prince Francis and his two younger brothers into bastards. Queen Catherine sends an assassin to kill both Queen Mary and Bash. King Henry II has the assassin killed before he can complete his task, and Queen Catherine is imprisoned. King Henry II agrees to Queen Mary's terms and leaves for Rome to seek the Pope's approval for Bash's legitimization. Clarissa is chained in a cell by Nostradamus as punishment for killing Aylee, but she stabs him and escapes.
Credits
Adapted from Wikipedia contributors, Reign season 1. HTML formatting and reference markers removed.