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  • Nippon TV

The Case Book of Arne

  • 2026
  • Ended
  • Animation · Mystery
  • 1 season
  • 6.0/10

Louis Hartmann loses his father, a private detective investigating a string of murders, leaving him all alone. Rumor has it that the murders are the work of a Grave-Digger Vampire. Louis isn’t keen on superstitions and vows to catch the culprit himself. That is, until a self-proclaimed detective, Arne Neuntöte, and his assistant, Lynn Reinweiß, appear. A new door is about to open for Louis…

Latest: Season 1 · 2026

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  1. E1. Those Who Dig Pits for Others Will Fall In Themselves

    Jan 7, 2026 · 23m

    Louis Hartmann joins forces with the members of the Arne Detective Agency to investigate his father's murder.

  2. E2. There Is Always Sunshine After the Rain

    Jan 14, 2026 · 22m

    Lynn remembers the time she first met Arne and hired him to help investigate her father's suspicious behavior.

  3. E3. Misfortune Never Visits Alone

    Jan 21, 2026 · 23m

    Arne makes a shocking discovery about Lynn's father and Gordon reveals the dark truth of the Reinweiß mansion.

  4. E4. Those Who Never Gamble Never Win

    Jan 28, 2026 · 22m

    Lynn and Arne are both troubled by surprise encounters that threaten to alter the course of the investigation.

  5. E5. One Swallow Does Not a Summer Make!

    Feb 4, 2026 · 22m

    Lynn and Arne assemble the servants to review the clues and sniff out the killers through deductive reasoning.

  6. E6. Time Will Tell

    Feb 11, 2026 · 22m

    A distraught mermaid arrives at the detective agency searching for the reason why her lover tried to kill her.

+6 more episodes — open all seasons to browse every episode.

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