(CNN) The following contains spoilers about the "Arrow" series finale. As the series that essentially started the superhero tidal wave on the CW, "Arrow's" series finale felt like an occasion. Green Arrow, played by Stephen Amell, having sacrificed himself during the multi-series crossover "Crisis on Infinite Earths," the producers faced a delicate balancing act. In addition, the episode teased a long-held fan theory that John Diggle (David Ramsey) might eventually become Green Lantern , another venerable DC hero who teamed up with Green Arrow in the comics. That clue came via a brief sequence that saw Diggle find a box casting a mysterious emerald light.

Source: CNN January 29, 2020 03:11 UTC