Arrow Season 8 Premiere: 12 Easter Eggs & References You Missed In 'Starling City'

2. Sherlock Holmes

Now this one may have been less obvious than the comic-centric references, but it was still a very, very nice one.

Adrian Chase deduced that Oliver Queen was The Hood from a parallel dimension simply because Bruce Wayne had once told him that "If you eliminate the impossible, whatever remains, however improbable, must be the truth". Not only was that a damn fine recital on Chase's part, it was some specific deducing considering the Arrowverse is set in a world where "impossible" has no limits.

The irony here is that, while he learned this line from the World's Greatest Detective on Earth-2, that line is actually a quotation from the world's other greatest detective, Sherlock Holmes.