The reviews are in and the new Ghostbusters reboot is a hit. Kristen Wiig as Erin Gilbert, Leslie Jones as Patty Tolan, Kate McKinnon as Jillian Holtzmann, and Melissa McCarthy as Abby Yates have proved themselves to be a supernatural comedy force more than capable of holding their own with the iconic OG Ghostbusters cast. Now that viewers have had a taste of the reboot and like it, will there be a Ghostbusters 2? The bonus scene at the end of the credits offers a big hint.

Fans that stayed through the credits were treated to a bonus scene where all four of the Ghostbusters are sitting around their new HQ, according to Den of Geek. Patty, listening to something, looks up and asks, "What is Zuul?" The others just shrug.

Dun, dun, dun! That sure smells like a set up to bring the ladies, and the very pretty, dancing Chris Hemsworth back for another go around NYC in the tricked-out hearse.

Zuul, fans will remember, was the scary ghost, and gatekeeper of Gozer, who took over Dana's — played by Signourney Weaver — body in the 1984 original. Does that scene mean fans can expect a sequel reintroducing them to Zuul? What about the Keymaster Vinz Clortho? Will his role, played in 1984 by Rick Moranis, be back for more, too?

Hard to say for sure.

Director Paul Feig was asked about including Zuul in a future movies by Movie Pilot and certainly didn't rule it out:

You know, we're going to see how this one goes. Hopefully people will come and it will make this a successful film and then we'll take it from there. I'm one movie at a time. But to have this amazing cast and this amazing franchise is something you'd like to keep going.

But in an interview with IGN, Feig was more forthcoming about a potential Zuul resurrection in a future Ghostbusters movie, saying the reference in the end-credits scene was meant to give the franchise the option to pursue a Zuul story down the line.

Feig told IGN:

We wanted to say possibly there's something you know from the first one can come in. Again it's not about creating the cinematic universe where suddenly there's a worm-hole and the original Ghostbusters show up, although somebody might do that at some point. But I don't know, it was kind of a little comfort food, easter egg, that gives us an opening if we wanted to do another movie.

It's great to see the newest Ghostbusters gals killing it in the new movie and the idea of a return to the original story line with Zuul as the demonic villain is almost too good to be true.