Heir to the Demon

Sara returns to Starling City at Oliver's request to check on Laurel, and both he and Quentin would like her to stay. her situation becomes precarious when a member of the League of Assassins arrives in town and sets out to persuade Sara to fulfill her vow and return to the organization... no matter what it takes. Meanwhile, Felicity discovers Moira's secret and must choose whether to tell Oliver or not.