Still adjusting to his 21st century reality, Ichabod Crane and Det. Abbie Mills move forward in their mission to unravel the mysteries lurking in Sleepy Hollow. A frightful vision from Ichabod's former wife Katrina, sends the unlikely duo on the hunt for a vengeful witch from the 1700s who has been awoken by unknown evils and is on a path of destruction in the quaint town. Meanwhile, despite all odds, Officer Andy Brooks is back and on a questionable mission of his own.

Lt. Abbie Mills and Ichabod Crane search for Abbie's estranged sister, Jenny Tag Team, who has escaped from a Sleepy Hollow psychiatric hospital. In a game-changing episode, which includes flashbacks to the real Boston Tea Party, Abbie and Ichabod discover more about the evil they are facing... and finally learn its name in the haunting.

When Ichabod Crane goes missing, his wife, Katrina, appears to Lt. Abbie Mills in a vision warning her that the Headless Horseman will return to Sleepy Hollow by nightfall. A frantic Abbie seeks help from the mysterious Henry Parrish, who holds vital clues about how Crane can vanquish his dangerous blood tie to the Horseman. Meanwhile, an encounter from Crane's past weighs heavily on him, and details about his first encounter with Katrina are revealed.

Ichabod, Abbie, Capt. Irving and Jenny Mills unite against the Headless Horseman; information about the Horseman's motive shocks Ichabod.

Ichabod enlists Henry Parrish to help him communicate with Katrina, but in the process, a menacing danger is unleashed from purgatory.

Ichabod and Abbie discover a massive secret buried within the pages of George Washington’s Bible and unearth the shocking true nature of the founding father’s death. Meanwhile, Captain Irving makes a near-impossible decision for the sake of his beloved family that drastically changes his future.

Henry sets out to find the Gehenna Key, which will allow his master Moloch to escape from Purgatory with an army of the damned. Meanwhile, Ichabod tries to free himself from his buried tomb, and Jenny must escape the Hessians holding her on Henry's behalf.

Abbie and Crane's search for a missing Sleepy Hollow child reveals a creature akin to the Pied Piper, whose legacy with the child's family extends back to a centuries-old curse.

A woman from Ichabod Crane's past comes to Sleepy Hollow in the form of an un-dead Weeping Lady, aiming to harm anyone in her path. Katrina and Crane learn unsettling things about each other's pasts. Abbie has some unexpected flirtatious encounters.

Abbie and Ichabod learn that Katrina is in imminent danger and race against the clock to help her.

Crane and Abbie set out to take down a succubus whom Henry has sent out to drain the life forces out of its victims.

Ichabod and Abbie set out to find the Sword of Methuselah, the only weapon capable of killing Moloch and ending the coming apocalypse.

Reeling from the events of their standoff with Moloch, Ichabod and Abbie encounter an angel, Orion, that they believe can help them. Meanwhile, Katrina searches for the humanity in Abraham.

With the help of Ichabod, Abbie and Jenny, Nick Hawley faces off against his evil childhood caretaker, and Captain Frank Irving adjusts to his new... life(?)

Ichabod and Abbie face demonic creatures that guard a secret crypt and encounter Thomas Jefferson in their quest to fight evil. Meanwhile, Jenny learns a shocking secret about Frank Irving.

The town of Sleepy Hollow and its inhabitants are permanently changed; a relationship is destroyed beyond repair.

When Pandora uses her powers to unleash a new form of evil, Abbie and Crane are forced to face their pasts in unexpected ways.

Fear is rampant in Sleepy Hollow when Pandora releases an ancient artifact from her box that can transform an ordinary human into a terrifying figure from the past.

With Booth and Brennan in tow, Abbie and Crane set out to prove that supernatural forces are at play when a mysterious death plagues the FBI. As Pandora unleashes a force to awaken the dangerous Red Coast General Howe, both teams must find a way to save the town from the British Army of the Undead. Can the power of Booth and Brennan combined with Abbie and Crane be enough to stop Pandora’s evil forces?

The crossover starts on Bones S11E05 The Resurrection in the Remains (I).

When Pandora unleashes an iconic monster to haunt the residents of Sleepy Hollow as they sleep, Abbie and Jenny are tempted to confront a painful part of their past. Meanwhile, Abbie makes a crucial decision for her career and Crane does his best to guide her with wisdom from his own experiences. Will Ichabod lead Abbie to the right decision?

When Reynolds heads to D.C. to discuss developments in the Nevins case, Abbie is left in command. Jenny and Joe deal with unexpected consequences as a result of stealing the shard, which leaves both the lives of the heroes and Abbie's career in great peril. Meanwhile, a new, more dangerous evil force is revealed.

Following Abbie's huge sacrifice, Crane and Jennie find themselves at a loss. In an effort to save Abbie, Crane forms and unlikely partnership and Jenny confronts a former foe.

The Kindred, the Frankenstein-esque creature Abby & Crane used against the Headless Horseman, returns and wreaks bloody havoc on Sleepy Hollow.

Ichabod discovers that the creature that inspired the stories of the Jersey Devil. Meanwhile, Joe and Jenny reach a possible hurdle in their relationship.

After a supernatural event takes the Witnesses by surprise, both Crane and Abbie are forced to work alongside their most hated foes yet. Meanwhile, Jenny and Joe struggle to salvage their relationship, as they continue to battle their own internal demons.

As The Hidden One grows stronger, Crane must examine his past with Betsy Ross to find the key to stopping him. Meanwhile, Jenny wonders if she can ever have a relationship with her father, and Abbie faces a hard decision as things with Reynolds become more strained.

With a single day left before The Hidden One regains omniscience, Abbie and Crane must do the unthinkable in a last-ditch effort to save the world. Meanwhile, Jenny, Joe and Sophie devise a plan to stall as the Witnesses work.

After a startling discovery, Abbie and Crane realize what they must do in order to make Pandora’s box complete again. Meanwhile, the team works tirelessly to stop The Hidden One, before he destroys all of humanity. Can the Witnesses succeed with the fate of the world in their hands once again.

Crane and Jenny begin to navigate life following the unexpected death of Abbie Mills. When he finds himself in a the nation’s capital, Crane must forge unlikely partnerships in his quest to find the next Witness, as he discovers that there is more evil at play than he realized was possible.

When one of Crane's greatest foes comes to town to threaten the safety of Washington's highest officials, the team must work quickly to find a solution.

As Dreyfuss gets closer to making progress on his mission, important parts of his past come to light. His former partner returns to settle the score from years before and it becomes evident that Dreyfuss' involvement in the supernatural is not something new. Don't miss learning how Malcolm Dreyfuss came to be.

Just before Molly's 11th birthday, her father returns from duty. As Diana begins to wonder if her ex might be ready to be a part of his daughter's life full-time, the team has a shocking realization.

When a monster appears that resembles Molly's childhood imaginary friend, Diana realizes her daughter's life as a Witness will be anything but normal. Meanwhile, Molly gets her chance to see the vault for the first time.

When a mysterious woman finds her way into the vault, the team struggles to understand who she is and with whom her allegiances lie. Meanwhile, Alex must come to terms with her complicated feelings when she finds herself in a tight spot. Can Team Witness handle what might be revealed?

Dreyfuss finally garners enough power to infiltrate the White House, and his group of minions grow strong enough to take action. Can Team Witness stop Dreyfuss in time?