Robin Hood Spoilers!

Episode 3x10

"Deep in the forest, Robin Hood comes upon a very jumpy Gisborne, who has escaped the clutches of his evil sister, Isabella, and the formidable Sheriff of Nottingham, as the medieval adventure with a modern twist continues.

Just as Robin and Gisborne take up arms against each other, tiny arrows pierce their necks and they fall comatose to the ground. They awake at night to find themselves bound and held captive by a mysterious elderly hooded leper, whose revelations will change their lives for ever and bind the mortal enemies in an uneasy truce.

The hooded leper only agrees to give them back their liberty on condition that they work together to save another who is in York and needs their help. Once their bickering subsides, they reluctantly agree to their captor's emphatic demand.

Then, by the fireside, the mysterious stranger recounts to Robin and Gisborne the truth about their traumatised childhoods – sad and troubled memories that have shackled them together with bad blood. As the leper's tale unfolds, both men come to understand what happened between their respective parents. Robin's widowed father, Malcolm, Lord of Locksley, and Gisborne's beautiful French mother, Ghislaine, and her devoted husband, Sir Roger Gisborne, were all thought to have met untimely deaths.

Robin and Gisborne are dumb struck when the stranger's narrative finally seems to conclude. But there is one further shocking truth to come.

Reeling, Robin and Gisborne stay true to their word and set off together to York to save their half brother, Archer, who, until now, they didn't know existed. They must move fast, not least because Isabella is on their trail."

Source: BBC