The Case Book of Arne
142026•6.5/10
AnimationMystery
Ratings
🎬TMDb
6.5/10(8)
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…
Production
SILVER LINK., Asmik Ace, Nippon Television Network Corporation, King Records, Vaka
Language
JA
Status
Ended
First Aired
January 7, 2026
Last Aired
March 25, 2026
Networks
Nippon TV
Trailers & Videos
Where to Watch
Region US · Lang EN
US
No providers available for this region.
Available in Your Library
Seasons & Episodes
Select a season to view episodes. Reddit links may contain spoilers.
Season
E1
Those Who Dig Pits for Others Will Fall In Themselves
Air date: 2026-01-07
Louis Hartmann joins forces with the members of the Arne Detective Agency to investigate his father's murder.
E2
There Is Always Sunshine After the Rain
Air date: 2026-01-14
Lynn remembers the time she first met Arne and hired him to help investigate her father's suspicious behavior.
E3
Misfortune Never Visits Alone
Air date: 2026-01-21
Arne makes a shocking discovery about Lynn's father and Gordon reveals the dark truth of the Reinweiß mansion.
E4
Those Who Never Gamble Never Win
Air date: 2026-01-28
Lynn and Arne are both troubled by surprise encounters that threaten to alter the course of the investigation.
E5
One Swallow Does Not a Summer Make!
Air date: 2026-02-04
Lynn and Arne assemble the servants to review the clues and sniff out the killers through deductive reasoning.
E6
Time Will Tell
Air date: 2026-02-11
A distraught mermaid arrives at the detective agency searching for the reason why her lover tried to kill her.
E7
Eating Whets the Appetite
Air date: 2026-02-18
Arne tracks down a jewel thief while Lynn investigates a series of disappearances connected to an art museum.
E8
Desire and Love Make All Burdens Lighter
Air date: 2026-02-25
Lynn and Arne trace the mysteries of the missing men and lost piece of jewelry to their shocking conclusions.
E9
Not All That Glitters Is Gold
Air date: 2026-03-04
Arne and Lynn are asked to investigate a man who appears to have started cheating on his wife after an injury.
E10
Different Countries, Different Customs
Air date: 2026-03-11
Arne decides to investigate a locked-room murder on a whim and soon realizes that it may not be what it seems.
E11
Birds of a Feather Flock Together
Air date: 2026-03-18
Arne uncovers a disturbing connection between all five of the cases investigated by the Arne Detective Agency.
E12
All's Well That Ends Well
Air date: 2026-03-25
Lynn and friends battle their way through Dracula's soldiers as they race to rescue Arne before it's too late.
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)
Recommended
Checking...
Mike Tyson Mysteries
2014•
7.3
Checking...
The Dinner Table Detective
2025•
7.1
Checking...
Phantom: Requiem for the Phantom
2009•
7.0
Checking...
City Hunter
1987•
7.8
Checking...
Hyouka
2012•
8.1
Checking...
s-CRY-ed
2001•
7.6
Checking...
Steal
2026•
7.4
Checking...
Barnaby Jones
1973•
7.1
Checking...
KILL BLUE
2026•
7.8
Checking...
Case Closed: The Culprit Hanzawa
2022•
7.5
Checking...
Duckman
1994•
7.2
Checking...
The Brokenwood Mysteries
2014•
7.6
Similar TV Shows
Checking...
Amuri in Star Ocean
2008•
8.0
Checking...
Jewelpet
2009•
8.0
Checking...
Azur Lane
2019•
7.5
Checking...
Chillin' in My 30s After Getting Fired From the Demon King's Army
2023•
7.5
Checking...
Black Jack Special: The 4 Miracles of Life
2003
Checking...
Go for It, Nakamura-kun!!
2026•
9.3
Checking...
Ave Mujica - The Die Is Cast -
2025•
7.6
Checking...
Let's Go Karaoke!
2025•
7.4
Checking...
Captivated, by You
2025•
8.2
Checking...
Whistle!
2002•
8.6
Checking...
Saber Marionette R
1995•
6.6
Checking...
Gaist Crusher
2013