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… ([Crunchyroll](https://www.crunchyroll.com/series/GT00365733/the-casebook-of-arne))
New PV: [https://www.youtube.com/watch?v=--qhzn2dQnk](https://www.youtube.com/watch?v=--qhzn2dQnk)
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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… ([Crunchyroll](https://www.crunchyroll.com/series/GT00365733/the-casebook-of-arne))
New PV: [https://www.youtube.com/watch?v=--qhzn2dQnk](https://www.youtube.com/watch?v=--qhzn2dQnk)
[https://natalie.mu/comic/news/655176](https://natalie.mu/comic/news/655176)
Apparently that new door that was about to open was a door to DEATH...