Arrow season 5 episode 22 spoilers: Katie Cassidy returns as Black Siren

At the moment, the main event of Arrow season 5 episode 22 appears to be fairly clear: An opportunity to see Katie Cassidy’s Black Siren. She is returning for the second time this season on next week’s “Missing,” and this could be the beginnings of something more more given that she is going to be also be in the finale and is set for a series regular position next season.

Is it possible that Black Siren is going to be the show’s first female Big Bad? We wouldn’t rule that out, but it’s also probably wrong to jump to those sort of assumptions at the moment. what we do know is that as Prometheus moves further and further along with his plan, we could in turn see Team Arrow divided up in a way like we haven’t seen it before. Take a look at the synopsis below for some further insight on that subject.

Arrow season 5 episode 22 synopsis – “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.”

The show seems interested in probably paying off its Rene storyline in this episode, and our sentiment here is that he missed the hearing because of matters out of his control — it’s hard for him to be there for his daughter when he’s been presumably taken by someone else.

As for Oliver’s birthday, is this really the right time for a party? We guess that you don’t want to let Adrian Chase control your whole life, and with that, everyone just may as well plan for the future as though he is not around. What we just know is that in two weeks, the finale will be here and with a wide array of different names whether it be John Barrowman, Manu Bennett, Katrina Law, or many others. This is going to be the most star-studded event in the show’s history beyond maybe the 100th episode.

Is there anything that you want to see on Arrow season 5 episode 22? Sound off with some of your thoughts in the comments below!

Meanwhile, be sure to head over to this link in the event you do want to get some additional news regarding Arrow! There will be a full review for tonight’s installment online a little bit later. (Photo: The CW.)