Vincent undergoes a series of tests arranged by the mystery buyer in order to not be exposed; and Cat, JT and Heather try to exonerate Vincent.
Vincent and Cat regroup in their effort to bring down the beast hunters. To that end, Vincent tries to infiltrate a private army while Cat attempts to obtain information at work while hoping no one discovers her ulterior motives.moreless
To stop Ra's from wiping out Starling City's population, Oliver is forced to reveal his true loyalties. However, when Ra's escapes, Oliver is forced to turn to his friends for help... but they still don't trust him after his betrayal.moreless
The mole within the League of Assassins sends an unexpected ally to Starling City to summon Diggle, Felicity, and Laurel. Meanwhile, Thea is reunited with Roy.. In the past, Oliver and Maseo capture Shrieve and attempt to get the cure from him.moreless
Ra's al Ghul makes Oliver an offer he can't refuse. The team join Oliver on his journey to Nanda Parbat where a heartbroken Felicity decides to take matters into her own hands.
After discovering how he used her, Thea betrays Malcolm to the League. Oliver tries to stop them to spare Thea the guilt of killing her parent, and travels to Nanda Parbat with Diggle. Meanwhile, Felicity tries to get Ray to focus when she learns that he's on the ragged edge.moreless
Malcolm engineers Slade's escape to train Oliver and Thea in how to survive. Meanwhile, five years ago Amanda brings Oliver and Maseo to Starling City to recover the Omega bio weapon, and Oliver must decide whether to stop China White or stay with his friends and family who are falling apart without him.moreless
Selina Kyle is kidnapped by an evil scientist who turns her into a real cat-woman.
A mysterious bat-like creature terrorizes Gotham City. The Police Force is in pursuit of the Dark Knight who investigates strange incidences so as to clear his name.