After Detective Lance (Paul Blackthorne) arrests Oliver (Stephen Amell) for murder, Oliver tells Moira (Susanna Thompson) the only lawyer he'll allow to represent him is Laurel (Katie Cassidy). Laurel takes the case which puts her at odds with her father. Oliver offers to take a polygraph in front Detective Lance but things get tense when Lance asks him if anyone else was on the island with him. Oliver flashes back to when he got his first scar, courtesy of Deathstroke (guest star Jeffrey Robinson).