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The hotly anticipated “Bones” and “Sleepy Hollow” crossover will debut just in time for Halloween on Oct. 29 with a two-part event.

Fox confirmed the special episodes and offered up details Thursday morning at the Television Critics Assn. press tour in Beverly Hills.

The crossover will start as a “Bones” episode, in which the discovery of human remains lead Brennan (Emily Deschanel) and Booth (David Boreanaz) on a hunt for clues. During their search, they encounter Ichabod Crane (Tom Mison) and Abbie Mills (Nicole Beharie) who are searching for answers of their own. Realizing that they are after the same evidence, the foursome team up to solve the mystery.

Immediately following, the second hour will pick up during “Sleepy Hollow,” as Ichabod’s former nemesis is back from the dead, causing Abbie and him to require advanced forensic expertise to stop him, bringing in Brennan and Booth to unlock 18th century secrets using 21st century science.

“When the idea came about to create this crossover event for fans, our writers’ room was immediately energized,” said “Sleepy Hollow” exec producer-showrunner Clifton Campbell. “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.”

“Bones” exec producer Michael Peterson described the crossover “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.”

He continued, “Put them together, and it’s going to be a great two-hour event that fans of both programs are going to love.”