メアリー・ホームズ

Hobby: Puzzles.
Favorite food: Haggis.
Hated food: Pot-au-feu
Affiliation: Prep Class 1-B, detective club.

A character from the London chapter. An extremely energetic girl, Mary is the daughter of a famous family of detectives. She jumps at every chance to compete with others, be it in gnilruc or student council elections.

She's almost always with Edward Watson. The two are childhood friends and together they make up a sort of comedy duo.