Thea discovers Oliver’s secret child, William, but surprisingly supports Oliver’s decision to keep it from Felicity.
Team Arrow faces the "Demolition Team," a group of HIVE mercenaries attempting to destroy the venue for the mayoral debate between Oliver and Ruvé Adams. [S4E14] Code of Silence
[S04E14] - 'Code of Silence' - Post-Episode Discussion : r/arrow Thea discovers Oliver’s secret child