The CW network have released the official description for "Arrow"
CLARK DISCOVERS THE GREEN ARROW'S SECRET IDENTITY
While attending a fundraiser, Lois witnesses the Green Arrow steal a rare diamond necklace off Martha's neck and vows to find the man behind the costume. Clark does some investigating of his own and discovers Oliver Queen is the Green Arrow and has been stealing from the rich and giving to the poor. Meanwhile, Lex enlists Lionel's help in testing Lana's loyalty.
While attending a fundraiser, Lois witnesses the Green Arrow steal a rare diamond necklace off Martha's neck and vows to find the man behind the costume. Clark does some investigating of his own and discovers Oliver Queen is the Green Arrow and has been stealing from the rich and giving to the poor. Meanwhile, Lex enlists Lionel's help in testing Lana's loyalty.
