While Diggle goes off after his brother, Thea takes a weekend off with Alex but begins to have he doubts that it was a good idea. Meanwhile, Oliver and Felicity travel to Hub City to find a shaman that can teach Oliver how to resist Damien's dark magic.
Season 4 Episode 20 of Arrow was watched by 2,070,000 viewers, resulting in a 0.70 rating in the 18-49 demographic.
Is Arrow Renewed or Cancelled for Season 5?
s04e01 - Green Arrow
s04e02 - The Candidate
s04e03 - Restoration
s04e04 - Beyond Redemption
s04e05 - Haunted
s04e06 - Lost Souls
s04e07 - Brotherhood
s04e08 - Legends of Yesterday (2)
s04e09 - Dark Waters
s04e10 - Blood Debts
s04e11 - A.W.O.L.
s04e12 - Unchained
s04e13 - Sins of the Father
s04e14 - Code of Silence
s04e15 - Taken
s04e16 - Broken Hearts
s04e17 - Beacon of Hope
s04e18 - Eleven-Fifty-Nine
s04e19 - Canary Cry
s04e20 - Genesis
s04e21 - Monument Point
s04e22 - Lost in the Flood
s04e23 - Schism
After a unhappy shipwreck, billionaire playboy Oliver Queen was missing and presumed dead for five years before being discovered alive on a remote island in the Pacific. When he returns home to Starling City Oliver has been changed by his ordeal on the island. While he hides the truth about the man he's become, he desperately wants to make amends for the actions he took as the boy he was.
As the Green Arrow - a vigilante - he protects his city with the help of former soldier John Diggle, computer-science expert Felicity Smoak, his vigilante-trained sister Thea Queen, Deputy Mayor Quentin Lance, brilliant inventor Curtis Holt, and his new recruits, street-savvy Rene Ramirez and meta-human Dinah Drake.
Oliver has finally solidified and strengthened his crime-fighting team only to have it threatened when unexpected enemies from his past return to Star City, forcing Oliver to rethink his relationship with each member of his 'family'.