‘Arrow’ Season 6 Spoilers: Episode 4 Synopsis, Photos And Promo Video Released

“Arrow” Season 6 is continuing with John Diggle in the green suit. Oliver named his best friend as his replacement on the CW drama, and Diggle will have his skills put to the test. He’ll go up against Black Siren in episode 4.

“Just as Oliver starts to get things in order, Black Siren launches another attack on the citizens of Star City,” the synopsis for the episode reads.

That’s not a lot of information, but the promo video gives us more clues. It looks like Black Siren (Katie Cassidy) is killing the men of Star City. She can immediately sense that it’s not Oliver (Stephen Amell) under the hood. “You’ve changed something about yourself. I just can’t put my finger on it,” she tells Diggle (David Ramsey) in the trailer.

Watch the promo video for “Arrow” Season 6, episode 4 below:

Neither the synopsis nor promo video focus on Felicity (Emily Bett Rickards), but it seems like she’ll have a big storyline this week. Emily Bett Rickards teased that there would be a bit of a role reversal in this episode, which is titled “Reversal.” When Felicity comes up against a problem, she suddenly won’t want to work as a team.

“She refuses the team’s help for 75 percent of it,” Rickards told Entertainment Weekly. “As we’ve seen before, Felicity doing that doesn’t always end up in her favor and is also nearsighted. It has to do with stealing some tech. It is one of my favorite episodes ever. I had one of the best times filming that episode, so hopefully you’ll like it.”

Judging from the photos, it seems like Black Siren is in a room with servers. What kind of high tech weapon is she after?

The photos below also show Oliver and Felicity enjoying their newly rekindled romance. They reunited in last week’s episode, and they seem to be celebrating at a fancy dinner. That doesn’t mean they’re drama-free. The couple will have some words when Felicity tries to fly solo.

“He and Felicity get into it a little bit because he says, ‘Look, you can do what you want, just don’t do it without backup. Use the team, that’s what they’re there for.’ The fact that she’s doesn’t gives him pause a little bit,” Amell teased to EW.

“Arrow” Season 6, episode 4 airs Thursday at 8 p.m. EDT on The CW.