[SPOILERS for those not caught up on Arrow ahead.]

For many fans of Arrow, the sting of loss is still fairly fresh when it comes to the show’s most recent Black Canary, Laurel Lance. As more bombshells drop for the members of Star City’s superhero squad, fans may be unsure about whether or not they’ll ever see Katie Cassidy again. As luck would have it, the multiverse is now (unfortunately) in shambles elsewhere within the DC TV universe, and a special appearance is in the cards.

An upcoming episode of The Flash, titled “Invincible,” will feature a special cameo from Cassidy as the Black Siren, a villainous double from Earth-2 that arrives to assist Zoom in taking down Team Flash.

As reported by CBR, the May 17th episode of The Flash not only boasts the intriguing cameo, but also teases development for Wally West (Keiynan Lonsdale), who will spring into action in order to assist The Flash despite Joe West’s dismay.

THE FLASH “Invincible” — (8:00-9:00 p.m. ET) (Content Rating TBD) (HDTV)
KATIE CASSIDY GUEST STARS AS BLACK SIREN – After Zoom (guest star Teddy Sears) unleashes an army of Earth-2 meta-humans on Central City, Barry (Grant Gustin) is shaken when he sees their leader is the Black Canary’s Earth-2 doppelganger, the Black Siren (guest star Katie Cassidy). Meanwhile, Wally (Keiynan Lonsdale) takes to the streets to help The Flash stop the meta-humans, which worries Joe (Jesse L. Martin). Iris (Candice Patton) and Henry (guest star John Wesley Shipp) are concerned about Barry taking on Zoom.

The Flash Finale Wally West The Flash: Invincible Synopsis Teases Earth 2 Laurel & Wallys Superheroics


With a story by Greg Berlanti & Andrew Kreisberg, and a teleplay by Brooke Roberts & David Kob, Jesse Warn (who directed previous episodes of The Flash and Arrow, most notably “Flash of Two Worlds”) will bring the story to screen from the director’s chair.

Since his arrival, Wally West has been slowly working his way into the cast as a recurring character with an interesting story, but his comic book counterpart may predict which direction he’s going in the show, and just how quickly. Wally’s comic appearances and familial relationship with Barry Allen were part of what led him to becoming Kid Flash (the natural part, at least) and Wally’s admiration for The Flash in the show seems to have sparked a determination to work alongside the scarlet speedster. The next few episodes may very well tease Wally’s eventual role as Kid Flash – though Wally might feel a little too mature for that title.

The Flash continues Tuesday May 3rd with “Rupture” at 8pm on The CW.

Source: CBR