Katie Cassidy To Guest Star On The Flash As Black Siren

After the awesome Earth-2 episodes of The Flash, we’re finally going to see some Arrow doppelgangers! Entertainment Weekly is reporting that Katie Cassidy will guest star as Black Siren, a Justice League Animated character, in the show’s second to last episode of the season. Hopefully, we see some more of Earth-2 in season three!

black siren
Black Siren

The Flash airs Tuesday’s on The CW

Source: EW and Twitter via Diva_Jong

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