Apparently, an unusual crossover between "Bones" and "Sleepy Hollow" will happen sooner than expected.

As weird as it may sound, viewers can expect back-to-back crossover episodes between the two very different Fox TV shows.

It was originally reported by TVLine that Fox is planning to air a crossover between the two shows sometime during middle of the next season. However, sources told Entertainment Weekly that the date for the crossover event has been set for Thursday, Oct. 29. That means that the two worlds will somehow collide right before Halloween.

This news comes as a complete surprise to many since the shows have very little in common. For example, "Bones" is a crime procedural comedy-drama, whereas "Sleepy Hollow" is supernatural horror and action series. "Sleepy Hollow" also takes places in a universe where demons, evil spirits and a Headless Horseman exist. On the other hand, "Bones" is based on real-life occurrences.

Last month, it was revealed that writer and producer Michael Peterson and executive producer John Collier have stepped up to run the show in wake of executive producer Stephen Nathan's departure, reported CarterMatt.

Fans can also expect the new season to begin months from where the Season 10 finale left off.

"Picking up six months after the Season 10 finale, Brennan and Booth have moved on to a new town and new jobs, having given up their old life and settled into a blissful death-free existence. But a murder unlike any other draws them back to investigate with their former colleagues at the Jeffersonian and FBI," reads the synopsis, according to CarterMatt.

Nathan also told The Hollywood Reporter that "the mystery and the fun of Season 11 is how is this team going to reassemble. How is life going to go on? At what point do we pick them up?"

Season 11 of "Bones" will premiere on Thursday, Oct. 1 at 8 p.m. EST on Fox.