Siren (S07E11)

While secretly working for Oliver (recurring guest star Justin Hartley), Chloe intercepts one of Lex's project files, but she is attacked by the Black Canary (guest star Alaina Huffman - "Navy NCIS: Naval Criminal Investigative Service," Painkiller Jane," "The O.C."), a mystery woman with a subsonic cry. Dinah Lance, Black Canarys alter ego, is a conservative talk show host who is working at the Daily Planet and clashes with Lois. Lex convinces the Black Canary that the Green Arrow and his team are terrorists so she launches an attack on the Green Arrow and Clark. Meanwhile, Lois discovers Oliver's secret. (Warner Bros. UK)