Katrielle is a “jack-of-all-trades and mystery-solving detective” who solves strange incidents that occur in London. She’ll take on any job, from looking for someone’s pet cat to exposing the criminal in a murder case. Her bizarre ideas for solving cases are gradually becoming a topic, and she’s starting to receive various cases.
While she originally started working as a detective to find her father Hershel Layton who suddenly disappeared, she is working to solve a variety of mysteries in town in the course of it. As she is pursuing new requests each day, the search for her father Hershel is not progressing.
Katrielle has an assistant to help her in her deductions. That assistant’s name is Sharo. A dog who can somehow talk. So then, what kind of hard to understand mysteries await Katrielle?