With her role recurring and her introduction coming just 3 episodes before the finale, you have to think we’re getting introduced to her this close to Season 4 for a reason.
Considering every finale of The Flash so far has led into the next season premise, it only makes sense that Tracy Brand is a big part of what’s in store for next year.
It sounds like The Flash is getting its own Felicity Smoak, and while many of you will undoubtedly have different opinions about how that would work, there are more important questions to ask.
Whoever Anne Dudek’s Tracy is, there’s a good chance that she’s going to be a key factor for the action of Season 4.