Caity Lotz will be returning to The CW's Arrow as apart of the Season 7 episode "Lost Canary," which will see Lotz' Sara Lance/White Canary joining Juliana Harkavy's Dinah Drake (the Black Canary) and Katie Cassidy's Laurel Lance (Black Canary/Black Siren) in a Birds of Prey-esque team-up.
The episode was first teased by Arrow showrunner Beth Schwartz on Twitter, who posted a photo of the script's title page with three Black Canary figures sitting on top of it. According to this page, "Lost Canary" will be the 18th episode of Arrow's seventh season.
Additionally, Katie Cassidy posted a photo of herself alongside both Harkavy and Lotz on Instagram, all but conforming Lotz' return for the upcoming episode.
Lotz first joined Arrow as Sara Lance/The Canary back in Season 2 and remained a series regular until Season 4. From there, Lotz departed Arrow for a lead role in DC's Legends of Tomorrow, reprising her role as Sara, who adopted the new moniker of White Canary.
However, she has still occasionally returned to Arrow on a special guest star basis. In fact, "Lost Canary" will actually be her second appearance in the show's ongoing seventh season, as she previously popped up in the documentary-style 150th episode "Emerald Archer."
Airing Mondays at 8 pm ET/PT on The CW, Arrow stars Stephen Amell as Oliver Queen, David Ramsey as John Diggle, Emily Bett Rickards as Felicity Smoak, Rick Gonzalez as Wild Dog, Juliana Harkavy as Black Canary, Colton Haynes as Arsenal, Kirk Acevedo as Diaz and Katie Cassidy as Black Siren.