Fighting Fire with Fire
Oliver faces his biggest challenge yet as mayor. Felicity continues down her dark path with Helix. After Vigilante attacks Oliver while he's acting as the mayor, Diggle leads the team in a mission to stop Vigilante once and for all.
Episodes
21
Honor Thy Fathers 42
Oliver faces the forced release of criminals prosecuted by Adrian Chase, while a crate is delivered to Oliver’s office containing a corpse in concrete.
22
Missing 42
Black Siren returns to give Chase help; Felicity plans a birthday party for Oliver; Lance is angry with Rene for missing the custody hearing about his daughter.
23
Lian Yu 42
Oliver assembles a group of unlikely allies – Slade, Nyssa, Merlyn and Digger Harkness – to engage in an epic battle against Chase and his army.
