Tantei Opera Milky Holmes: Summer Special
Genres: Comedy, Mystery
Type: Special, Episodes: 1
Aired: Aug 25, 2011
Studio: J.C.Staff
Source: Original
Rating: PG-13 - Teens 13 or older
Synopsis:
A special program of Tantei Opera Milky Holmes produced by the staff of the TV series. 

After some pushing by Irene and her father and a lack of support otherwise, Kokoro stubbornly quits her job as a police detective to become an idol. She soon finds the idol life draining and starts to miss her old detective life. When Henriette notices Sherlock's loneliness without her, she stages a statue theft in order to convince Kokoro to return to the force.

(Source: AniDB)