The outlaws are stunned when Robin (Jonas Armstrong) reveals that Gisborne (Richard Armitage) is joining them so Robin can honor his father's dying wish and save his half brother, Archer (guest star Clive Standen), who is awaiting execution. Meanwhile, an anxious Isabella (Lara Pulver) bribes a toll collector to gather information on the whereabouts of her brother and Robin in the new episode "The Enemy of My Enemy."