Reign - Season 3, Episode 7: Soundtracks

The French nobles gather at the edge of the forest as Don Carlos tells them the rules of the Hound and the Hate chaese then they separate into Hares (the males) and Hounds (the females) and head off. 

The Hounds chase after the Hares through the forest, places kisses on their caught prey in victory; Mary spots Don Carlos over a ridge and goes after him.

As they wait for the the killer, Greer comes to chat with Leith, when Greer notices Claude's pearl pin on lapel and question how he came about it, he tells her about their blossoming relationship.