Burger King will begin offering the Nightmare King next week and it will be available through Nov. 1. 

The spooky sandwich is made with a quarter pound of beef, chicken filet, American cheese, bacon, mayonnaise and onion. It's served on a green sesame-seed bun. 

Burger King is claiming that the special burger will literally induce nightmares. The fast-food chain claims it test the sandwich with 100 people over 10 nights and saw a 3.5 increase in nightmares.

This isn't the first time Burger King has released a new sandwich during this time of year. In 2015, the chain introduced the Halloween Whopper and it included a black bun.