Catherine meets court scientist Nikolai, who announces a comet is about to pass through Russia. She uses this phenomenon to her advantage and in the face of some huge challenges, unearths a new side of her leadership.
Catherine introduces divorce to the court with unforeseen consequences. Grigor befriends Maxim and goes stag hunting, and Elizabeth and Petrov go on a trip to the regions.
Catherine tries to persuade Peter to come home whilst Hugo re-doubles his attempts to regain his kingdom. Georgina continues to play her complicated court games.
Catherine involves the peasants, nobles and merchants in a conference designed to bring change to Russia. Peter’s hunt for revenge on an historic enemy threatens to destabilise Catherine’s attempt to outlaw murder.
Catherine is visited by the UK and US Ambassadors both wanting her to intervene in the War of Independence. Maxim takes issue with the public displays of affection between Grigor and Marial.
Catherine and Peter seek some marriage guidance after the chaotic events of the previous day left them in an awkward place in their relationship.