The fall's most confusing development, the upcoming two-hour Bones and Sleepy Hollow crossover event, will air Thursday, Oct. 29 beginning 8/7c on Fox, the network announced Thursday.

In an episode that is said to "thrill the living, the dead, and everything in between," Booth (David Boreanaz) and Brennan (Emily Deschanel) will cross paths with Ichabod (Tom Mison) and Abbie (Nicole Beharie) after the discovery of some pretty grisly human remains. Naturally, they find that they're after the same evidence, because otherwise there is no single possible reason for these two crime-fighting teams to exist in the same universe, let alone team up for answers.

In the crossover's second hour, in a storyline that appears to be wholly unrelated to that of the first hour, Ichabod's former nemesis — who is most definitely not the Headless Horseman (sad face emoji)--is back from the dead and Abbie and Ichabod seek out Booth and Brennan for advanced forensics to stop him. Because, sure, why not?

Sleepy Hollow axes Headless, brings back fan favorite

"When the idea came about to create this crossover event for fans, our writers' room was immediately energized," Sleepy Hollow executive producer Clifton Campbell said in a statement. "The creative freedom to merge these two worlds which, at face value, seem so different; but at their core have such striking similarities--mystery, intrigue and methodical deduction, wrapped up in such strong character partnerships--was a challenge that we all welcomed, and we believe that fans of both series will be very satisfied by the result. It was a terrific collaborative experience across the board and we are eager to see the fan reaction to Ichabod and Abbie working alongside Brennan and Booth."

"The Bones/Sleepy Hollow crossover is like a great episode of The X-Files, where the Bones hour is the Scully, logic-based perspective and the Sleepy Hollow hour is more Fox Mulder-esque," Bones executive producer Michael Peterson said in a statement of his own. "Put them together, and it's going to be a great two-hour event that fans of both programs are going to love."

Bones and Sleepy Hollow return Thursday, Oct. 1 on Fox.