Robin of Sherwood - Season 3 Episode 8 The Betrayal The definitive version of the story.
Overview: King John, furious over the disappearance of the past several tax collections from Nottingham, schemes to put an end to the outlaws by ending their popular support. A band of his soldiers, led by the merciless Roger de Carnac, masquerades as Robin's band, committing atrocities against villagers throughout the shire.