An epic battle comes to a head in the darkness as Jim and his friends push back against Morgana. But without Merlin, how will they stop her?

A monumental loss carries a warning from beyond the grave as Gunmar marches for Heartstone Trollmarket. Can the team pull together to save the day?

The heroes brace for Angor Rot's inevitable invasion and prepare for the fight of their lives. Jim locates the last Triumbric Stone.

The Eternal Night covers Arcadia in shadow, leading to a long-awaited showdown between Gunmar and the newly transformed Trollhunter.

Two fateful battles unfold when Bular and Strickler order Jim to unlock the portal and free Gunmar and his Gumm-Gumm Army from the Darklands.

Merlin has a plan to go to war, but it's Jim's choice to make. Blinky and AAARRRGGHH!!! search for allies. Gunmar uses Barbara to get what he wants.

In a revealing flashback episode, Otto and Dictatious vie for Gunmar's ear while an increasingly paranoid Steve finds an unlikely ally.

Facing serious accusations from the Tribunal, Jim gets the chance to see what his life would be like if he'd never found the amulet.

Hope springs from an unlikely source when Gunmar learns that Jim's friends are in the Darklands on a mission to bring him home.

Every second counts when Jim turns to a time-stopping Kairosect to snatch Strickler's ring, save his mother and find the second Triumbric Stone.

Señor Uhl sentences Jim and his friends to detention while Queen Usurna gathers evidence of a conspiracy. Draal comes face to face with Gunmar.

While Gunmar searches for the Staff of Avalon, Jim and Toby head into the Shadow Realm to rescue Claire's spirit and return it to her body.

With the future of two worlds at stake, the team races to find Merlin's Tomb -- and the Staff of Avalon -- before Gunmar can get his hands on it.

Jim stands trial for unleashing Gunmar while his friends race to clear his name. If convicted, he'll be sent to "The Deep", a dark realm of no return.

The Killahead Bridge is complete, but the door to the Darklands still won't open. Jim is forced to tell Claire the truth when she becomes a target.

As Gunmar readies to destroy Jim in the Darklands, Blinky and the gang strike a deal with the Janus Order in their quest to revive an old friend.

Jim tries to get closer to Claire on a school field trip to the museum, only to learn that the museum's curator, Ms. Nomura, has an unsettling secret.

While Jim gets a crash course in troll history, big problems -- and a bully -- await him in the human world. What better time for his first mission?

The Changeling posing as Claire's little brother throws a house party for the trolls of Arcadia. Jim and Toby look for a way to take Strickler's ring.

While Draal settles into his new digs, Jim volunteers to babysit so he can find out whether Claire's little brother, Enrique, is a Changeling.

Now out of the Darklands and readjusting to life in Arcadia, Jim and the team must face the consequences of their risky actions.

The heroes launch a dangerous quest to find the first Triumbric Stone. Angor Rot concocts a charm that links Strickler and Barbara's fates.

With the trolls hiding out in Arcadia, AAARRRGGHH!!! goes undercover to see what Gunmar is up to. A potential rival brings out Jim's jealous side.

Multiple problems plague a frazzled Jim when his amulet goes on the fritz and Claire invites him to meet her parents at a family barbecue.

Jim and Toby tour Heartstone Trollmarket, where Jim begins his training and the presence of the first human Trollhunter stirs up bitter resentment.

Claire gets her first look at Heartstone Trollmarket, and Jim receives a ghostly summons. Elsewhere, Strickler awakens an ancient assassin.

Jim searches for a way to kill Gunmar so Claire can bring her brother back home. A power-hungry Strickler returns to Arcadia with Angor Rot.

Still reeling from the discovery of the amulet's power, a stunned Jim meets his new mentors and learns he's been tasked with a sacred responsibility.

Toby and Claire take on a Trollhunter task so Jim can win a Spring King challenge. In the process, they learn to master new weapons.

Señor Uhl interrupts an important mission with an awkward ultimatum for Jim: help two new students fit in ... or face a repeat of sophomore year.

As a new day dawns in Arcadia, two trolls are locked in an epic battle with major consequences for the human world -- and one human boy in particular.

Jim's 16th birthday is full of surprises, including the arrival of a terrifying new species of troll that's immune to the effects of sunlight.