Katie Cassidy returns as Black Siren on next week's all-new episode of Arrow.
Entitled Missing, the episode also features the return of John Barrowman as Malcolm Merlyn.
The CW has released a large batch of promotional images from the episode, which can be viewed below along with a pair of promos...
Black Siren (guest star Katie Cassidy) returns to help Chase (Josh Segarra). Felicity (Emily Bett Rickards) organizes a birthday party for Oliver (Stephen Amell) while Lance (Paul Blackthorne) is furious after Rene (Rick Gonzalez) misses the custody hearing for his daughter.
Starring Stephen Amell, David Ramsey, Emily Bett Rickards, Willa Holland, Echo Kellum, Rick Gonzalez, Julia Harkavy, Josh Segarra and Paul Blackthorne, Arrow returns with another exciting episode Wednesday night at 8pm.
Source: The CW Television Network
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