DC’s TV-verse serves up only two shows this week. On Supergirl, the Maid of Might stands by Lena Luthor when she seems to join forces with Lillian and Metallo. Kara ends the show thinking her support for her friend has been vindicated; we’re less certain.

In this week’s episode of Arrow , Melkotians force our heroes to relive the gunfight at OK Corral tensions increase among allies, and we learn Mad Dog’s origin.

Next week goes full-on comic book, with the Flash engaging in warfare at Gorilla City and Supergirl mixing it up with a pest from the fifth dimension.