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. ...

Toby gets caught in the crosshairs when a troll goes missing and the city cracks down on crime. An ancient voice refuses to be silenced. ...

Something strange is brewing at school, where the teachers are more agitated than usual. Claire's illness shows disturbing side effects. ...

A double date night becomes more lively than anyone anticipates when Morgana takes possession of Claire at dinner. ...

To free Claire from possession by Morgana, Stricklander is summoned to help, but Morgana has formidable ways to resist. ...

When Jim's mother's memories of the Troll world reemerge, she gathers Tobia and Claire's parents together to confront their children about their activities as the kids st ...

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. ...

A long-dormant ally shows Jim and his friends what really happened at the Battle of Killahead. Gunmar awakens Morgana, and Angor Rot plots his revenge. ...

Even while the Trollhunters gather components for Merlin for a spell, Jim's only chance to avoid being held back at school is to show around a pair of new and very strang ...

As Gunmar hunts for the key to free Morgana, Merlin ruthlessly manipulates Jim into making a dramatic and irrevocable choice for what he considers the greater good. ...

A greatly changed Jim renews his Trollhunter training but struggles to accept his new reality. Gunmar and Morgana rally the troops for an attack. ...

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

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