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Oh dearie, dearie me. It is I who usually asks the questions... I am, you see, but a humble teacher. Call me Ms Primstone.

Primstone is a teacher at the Labyrinthia Primary School who was a witness in Maya Fey's witch trial. She has a habit of saying "dearie, dearie me".

Labyrinthian teacher[]

Nothing is known of Primstone's life prior to her memory erasure and arrival in Labyrinthia. For her new life she was given the role of a primary school teacher, with Inquisitor Zacharias Barnham being a former student of hers, according to their shared false memories.

Witness to witchcraft[]

Main articles: The Great Witch & The Golden Court

Primstone was outside Newton Belduke's former home with Birdly the bard when they heard a scream coming from inside the house. Joined by Luke Triton and Emeer Punchenbaug, the group rushed inside only to find Hershel Layton turned into a golden statue and Maya Fey standing next to a Talea Magica. They watched in horror as Layton fell to the ground, with his arm falling off in the process. The observers assumed that Fey was responsible and accused her of being a witch.

Primstone was later called to the Witches' Court with the other witnesses to testify about the crime. She declared that friendship led to nothing but trouble and that Layton was pointing a knife at Fey and threatening her. This placed Primstone at odds with Triton, who argued that Layton would never threaten anyone with a knife. The schoolteacher was soon proven wrong when Price brought the professor's detached arm (which had gone missing shortly after the witness' arrival due to Punchenbaug stealing and selling it), showing that he was definitely not holding a knife. Primstone then testified that Fey had summoned a familiar with the Famalia spell, but this was also proven to be untrue when it was discovered that the Famalia gem on the Talea Magica was a fake.


Ms. Primstone comes across as the archetypal "strict teacher" with a habit of saying "dearie, dearie me" and "this will be on the test!" a lot. Her teaching style appears to revolve around stating that just about everything ultimately leads to disaster (such as puzzles) and should therefore be avoided.


  • Japanese - Tatāseru (タターセル):
    • "Tatāseru" is a play on "tadaseru" (正せる), which means "to correct". This is likely in reference to her job as a teacher.
  • English - Ms. Primstone:
    • Her English name is likely a play on the word "prim", as in "prudish/straight-laced/formal" or "precise/affectedly neat". The "prim" in her name also might refer to her occupation as a primary school teacher.
  • French - Mlle Ostère:
    • Her name comes from the French word "austère", meaning "stern".
  • Spanish - Doña Severiana:
    • Her name "Severiana" comes from "severa", meaning "severe".
  • Italian - Signorina Austeri:
    • Her name, "Austeri", means "stern" or "grave", and probably refers to her personality.
  • Dutch - Juffrouw Coldstone:
    • Her name, "Coldstone", could be a reference to her cold personality and/or her English name.
  • German - Frau Schleifstein:
    • Her name, "Schleifstein", means "grindstone".


In The Art of Dai Gyakuten Saiban: Naruhodō Ryūnosuke no Bōken, one of the jurors from The Great Ace Attorney: Adventures is said to be a "reincarnation" of a certain character; this may be a reference to the physically similar Primstone, as Kazuya Nuri was the art director for both games.