The Flash preview: Katie Cassidy's Black Siren faces off against Barry

The Flash type TV Show network The CW genre Superhero Where to watch Close Streaming Options

Katie Cassidy returns to the Berlanti universe during Tuesday’s episode of The Flash — but she’s not the Laurel Lance we remember from Arrow.

In the wake of Laurel’s death, her Earth-2 doppelgänger Black Siren arrives on Earth-1 and plans to take down The Flash (Grant Gustin) for Zoom (Teddy Sears). Check out an exclusive sneak peek above.

The Flash airs Tuesdays at 8 p.m. ET on The CW.