- Season 5 Episode 22
BLACK SIREN RETURNS
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.
Promo Video #1
See more at Arrow Season 5 Episode 22 "Missing" Promo