Arrow star Katie Cassidy in The Flash

Arrow star Katie Cassidy in The Flash

Black Siren in The Flash

Black Siren in The Flash

We have seen lots of doppelgängers in season 2 of the Flash.  Not always the same name, not always good.  We saw an example with Cisco and Caitlin where on Earth 2 they were Evil and Caitlin was actually a meta human.

Earth 2 is just one of infinite possible Earths.  But Earth 2 is where Zoom is so we assume The Flash does find a way to get back there to get vengeance and maybe rescue the man in the iron mask.

Now we have just heard that Arrow star Katie Cassidy will guest-star as Black Siren on Earth-Two.  She plays Laurel Lance in The Arrow.

She will be seen in the episode of The Flash airing May 17, confirmed by Arrow executive producer Marc Guggenheim at a Monday press screening

Black Siren is the only female member of the Justice Guild and is the Golden Age version of Black Canary, see more about her here:
http://dcau.wikia.com/wiki/Black_Siren
http://dc.wikia.com/wiki/Donna_Nance_%28DCAU%29

 

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