The Case Book of Arne(2026)
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…
- First aired:
- 2026-01-07
- Country:
- JP
- Network:
- Nippon TV
Episodes
1. Those Who Dig Pits for Others Will Fall In Themselves
★ 7.02026-01-07 · 23m
Louis Hartmann joins forces with the members of the Arne Detective Agency to investigate his father's murder.
2. There Is Always Sunshine After the Rain
★ 6.02026-01-14 · 22m
Lynn remembers the time she first met Arne and hired him to help investigate her father's suspicious behavior.
3. Misfortune Never Visits Alone
★ 6.52026-01-21 · 23m
Arne makes a shocking discovery about Lynn's father and Gordon reveals the dark truth of the Reinweiß mansion.
4. Those Who Never Gamble Never Win
★ 5.02026-01-28 · 22m
Lynn and Arne are both troubled by surprise encounters that threaten to alter the course of the investigation.
5. One Swallow Does Not a Summer Make!
★ 4.02026-02-04 · 22m
Lynn and Arne assemble the servants to review the clues and sniff out the killers through deductive reasoning.
6. Time Will Tell
★ 4.02026-02-11 · 22m
A distraught mermaid arrives at the detective agency searching for the reason why her lover tried to kill her.
7. Eating Whets the Appetite
★ 3.52026-02-18 · 22m
Arne tracks down a jewel thief while Lynn investigates a series of disappearances connected to an art museum.
8. Desire and Love Make All Burdens Lighter
★ 5.02026-02-25 · 22m
Lynn and Arne trace the mysteries of the missing men and lost piece of jewelry to their shocking conclusions.
9. Not All That Glitters Is Gold
★ 6.02026-03-04 · 22m
Arne and Lynn are asked to investigate a man who appears to have started cheating on his wife after an injury.
10. Different Countries, Different Customs
★ 5.02026-03-11 · 22m
Arne decides to investigate a locked-room murder on a whim and soon realizes that it may not be what it seems.
11. Birds of a Feather Flock Together
★ 6.02026-03-18 · 22m
Arne uncovers a disturbing connection between all five of the cases investigated by the Arne Detective Agency.
12. All's Well That Ends Well
★ 6.02026-03-25 · 22m
Lynn and friends battle their way through Dracula's soldiers as they race to rescue Arne before it's too late.
Where to watch
Availability for United States, provided by JustWatch via TMDB. Links open the provider's own listing.
Cast
Mariya Ise
Louis Hartmann (voice)
Koki Uchiyama
Arne Neuntöte (voice)
Aimi Tanaka
Young Arne Neuntöte (voice)
Yuka Nukui
Lynn Reinweiß (voice)
Yuki Sakakihara
Zisye (voice)
Yuuki Shin
Nachzehrer (voice)
Yoko Hikasa
Amy (voice)
