The Marquis is a love thief (the latest issue of Volume 1-2)

Publisher: Harlequin
Author: Junko Murata
Size: 128mm x 182mm
Number of books: 2
Language: Japanese
Category: Female manga, manga
Latest release date: 2011-09-30

Synopsis:
Georgiana, who is a wealthy daughter but wants to be a detective, was expecting a vacation this summer.
A popular summer resort berth where aristocrats and rich people gather must have some incident. Encounter a case where the famous emerald necklace at the party venue is stolen!
She heard a suspicious conversation just before the crime, and began an investigation immediately, but there was always a mysteriously beautiful Marquis Ashdown. Then he offered me to make me your assistant!?