Barbara was sporting a short, blonde cut up through Thursday's episode. Not only is her hair longer, but it's also a new color.
The trailer offers several looks at a burglar making his or her way through lasers, and given the claws used to get to a jewel, it's probably safe to assume this is Selina/Catwoman (Camren Bicondova).
Barbara Lee Gordon?
Is James (Ben McKenzie) holding his daughter here, or is this another young girl in trouble? Odds are it's the former. Considering who her parents are, it's no surprise she'll end up in danger.
Trouble for the Riddler and Penguin
Ed and Oswald (Robin Lord Taylor) are both embracing their identities as the Riddler and Penguin in the trailer, but it looks like they're going to run into some trouble while riding in the back of a limousine.
James is hunting someone, and we can only assume it's Batman since we next hear a deep voice saying, "I'm not your enemy."
James in trouble
There's someone in the backseat of James' car with a gun on him.
The Bat Signal brings Batman
Early in the trailer, James and Bullock (Donal Logue) appear to be setting up the Bat Signal when it looks like Alfred (Sean Pertwee) joins them. Considering we then see Batman on a rooftop staring down at them at the end, it works.
It's taken five seasons, but it's time for Batman to officially debut in the Gotham series finale.
The final episode flashes forward 10 years into the future, just as Bruce (David Mazouz) is ready to return for the opening of the new Wayne Tower. But he's not the only one who has changed in that time.