Young Miss Holmes, known in Japan as Christie High Tension (Japanese: クリスティ ハイテンション, Hepburn: Kurisuti Hai Tenshon) is a Japanese manga series written and illustrated by Kaoru Shintani. It was serialized in Comic Flapper from 2007 to 2011, with the chapters collected into 7 tankōbon volumes by Media Factory. Young Miss Holmes is a mystery series following Crystal "Christie" Margaret Hope, the 10-year-old niece of Sherlock Holmes who has inherited his skills of deduction and logical reasoning, as she partakes in some of Holmes' most famous cases. In 2011 Seven Seas Entertainment announced that had acquired the rights to the series and that they would release it in omnibus editions. The series was followed up with a sequel series titled Christie London Massive (Japanese: クリスティ・ロンドンマッシブ).