Arrow: Fundamentals

"Fundamentals" is the eighteenth episode of season six of the superhero action series Arrow, and the 120th episode of the series overall. It was directed by Joel Novoa with a script written by Ben Sokolowski and Spiro Skentzos. It first aired on the CW Network on Thursday, April 12th, 2018 at 9:00 pm. In this episode, Slade Wilson pays a visit to Oliver Queen to help him liberate his son from a foreign prison. Meanwhile, Dinah Drake gets the drop on the new Vigilante and learns his secret identity - and it is someone from her own past. F.B.I. agent Samanda Watson continues to cause headaches for the members of Team Arrow.