Betrayal

S1, E13: Recently released from prison nefarious criminal Cyrus Vanch (guest star DAVID ANDERS) intends to re-secure his position as leader of Starling City's underworld. His first step is to take down his biggest opponent in the city Arrow. Meanwhile, Oliver shows Moira his father's notebook and questions her about the names on the list. Thea is miserable as she starts her internship with Laurel at the legal aid office; and Detective Lance makes a deadly mistake that puts Laurel in the crosshairs of Vanch.