Ratings for the superhero show just spiked 30 percent for the show’s fifth episode. Arrow delivered 3.7 million viewers and a 1.3 in the adult demo Wednesday night against a full boat of competition on the other broadcast networks. That ties the show’s premiere in 18-49. The rise is well timed — our recap claims this is creatively the show’s best episode since its premiere. Supernatural (3.7 million, 1.0) was up 20 percent.
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