Everyone is angry at me because I made a choice. A lot of you think it was the wrong one. Well, it wouldn't be the first time, and it won't be the... well... maybe it'll be my last. The truth is, I'm still figuring out how to do the right thing. I'm not using that as an excuse; I accept full responsibility. But before you condemn me, lemme ask: who here hasn't made a mistake? Yes, I went into the bridge to save Claire's brother, and if I'm being completely honest, I would do it again!
―Jim's speech during his trial against the Troll Tribunal

Mistrial and Error is the thirty-eighth episode of Trollhunters and the twelfth episode of Part Two.

Official Synopsis

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.


While Jim stands on trial for his life, Blinky and Claire try to investigate a way to get Jim pardoned. When they find out that there is a spy, they realize that this trial is a sham and all a plot to get Jim out of the way. Can they find out who the culprit is, or will Jim be executed?




  • This is the second time which the setting of the episode does not take place in Arcadia Oaks but solely in Heartstone Trollmarket. The first being the Part One season finale "Something Rotten This Way Comes".
  • It is revealed that Usurna is actually working for Gunmar and was the one who actually helped him escape all along.
  • When Jim was exiled to The Deep, he confronts a monstrous troll version of himself with the Eclipse Blade, showing that Jim's deepest fear is losing his humanity. This also most likely foreshadows Jim's ultimate fate near the end of Part Three.
    • Aaron Waltke on his Twitter page confirms that the monster Jim confronts in the Deep is, in fact, a manifestation of his deepest fear: losing his human life.
  • This marks the final (physical) appearance of Vendel, due to being killed by Usurna.
  • In a "blink-and-you'll-miss-it" moment, when the tribunal does their first round of rock-throwing at Toby and AAARRRGGHH!!!, a gnome can be seen flying by Toby as one of the objects tossed.
  • Error: When Usurna smashes Vendel's body, the head piece rolls face down on the floor but as Blinky later found him dead, it was atop the pile of rubble.
  • Running Gag: Blinky threatening to blow trolls up using dwärkstones.


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Arcadia Oaks-pedia has a collection of images and media related to Mistrial and Error which can be found at Mistrial and Error/Gallery.
Part One
"Becoming: Part 1"- "Becoming: Part 2"- "Wherefore Art Thou, Trollhunter?"- "Gnome Your Enemy"- "Waka Chaka!"- "Win Lose or Draal"- "To Catch a Changeling"- "Adventures in Trollsitting"- "Bittersweet Sixteen"- "Young Atlas"- "Recipe for Disaster"- "Claire and Present Danger"- "The Battle of Two Bridges"- "Return of the Trollhunter"- "Mudslinging"- "Roaming Fees May Apply"- "Blinky's Day Out"- "The Shattered King"- "Airheads"- "Where Is My Mind?"- "Party Monster"- "It's About Time"- "Wingmen"- "Angor Management"- "A Night to Remember"- "Something Rotten This Way Comes"
Part Two
"Escape from the Darklands"- "Skullcrusher"- "Grand Theft Otto"- "KanjigAAARRRGGHH!!!"- "Homecoming"- "Hiss Hiss, Bang Bang"- "Hero with a Thousand Faces"- "Just Add Water"- "Creepslayerz"- "The Reckless Club"- "Unbecoming"- "Mistrial and Error"- "In the Hall of the Gumm-Gumm King"
Part Three
"Night Patroll"- "Arcadia's Most Wanted"- "Bad Coffee"- "So I'm Dating a Sorceress"- "The Exorcism of Claire Nuñez"- "Parental Guidance"- "The Oath"- "For the Glory of Merlin"- "In Good Hands"- "A House Divided"- "Jimhunters"- "The Eternal Knight: Part 1"- "The Eternal Knight: Part 2"
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