Welcome to Zak Bagans’ Haunted Museum! For this year's Halloween special, Zak is giving his fans access to his house of horrors in Las Vegas, NV for one night only (otherwise you’ll have to foot the admission fee!). And for a few lucky fans, they got the chance of a lifetime — the opportunity to get an exclusive tour of the new museum and participate in an investigation into the building. Is it the most haunted museum in the world? We're about to find out!

After announcing a casting call for several fans to join the crew for this very special investigation, we received countless submission videos on social media from fans like you. But in the end, only three were chosen: 

Greg Ludwig 

City of Residence: Santa Clarita, CA

Occupation: Engineer

When did you start watching GA?: I've been watching since season 1.

Favorite episode/location: Bobby Mackey’s Music World

Marty McCloskey

City of Residence: Las Vegas, NV

Occupation: Fashion model/Trade show representative

When did you start watching GA?: I started watching Ghost Adventures about 4 years ago. I thought it was the best and most legit ghost hunting show on TV. I also thought Zak, Aaron and the crew were awesome and funny to watch. My wife and I always said how we feel we would get along with them and I end up actually getting on the show. Meant to be!

Favorite episode/location: My favorite episode would probably be when they investigated the Bell Witch. That entire episode was just straight creepy. I thought it was great they had a descendant of the family there to try to fire up the beast.

Alexandré Lemay a.k.a. Moonbeam 

City of Residence: Phoenix, AZ

Occupation: Artist and owner of Moon Goddess Market, and Singer/Composer (I composed and sang the music in my submission video). 

When did you start watching GA?: I saw the documentary back in 2005. I've been hooked ever since!

Favorite episode/location: Linda Vista Hospital in East LA was a great episode and one of my top favorites! 

“This is our most extreme event, ever,” says Zak. 

Special guests, one-of-a-kind artifacts and ANNABELLE: The thrilling two-hour event is one you won’t want to miss. Catch the Halloween special, this Saturday at 9|8c. Plus, stay tuned for sneak peeks all this week on Ghost Adventures' Facebook and Twitter.