In the sneak peek below, though, mostly what you really reach see is that the girl otherwise referred to as Helena really knows what she actually is doing a lot of the time, and isn’t going to mess around when it comes to the police.

She always has a backup plan, and that makes her both far more threatening and dangerous to everyone else in Starling City. The "Birds of Prey" episode of "Arrow" airs Wednesday (March 26) at 8 p.m. ET/PT on The CW.
The only problem with her appearance now? It’s mostly that it seems like a complete detour from everything else that is going on. The priority for Oliver Queen as of late has mostly been Deathstroke and Sebastian Blood.
While he may think that one of these problems is out of the way, the guy still has to deal with the other. It’s to be seen if this episode is mostly standalone, or some of these people are actually going to tie together well into the overall story.
If you need to know our official take on the episode a little bit later, we’ll have that with our full review. Plus, you will have a preview approaching a couple days after that. The show's executive producer Marc Guggenheim also revealed some spoilers to TV Guide. He spoke about Laurel, also it seems she'll play a significant role in tonight's episode.