Co-Creator of the series, Rei Kodama has announced that a third season of Tantei Opera Milky Holmes is under way and will air this summer. The third season of Tantei Opera Milky Holmes will include new characters joining the original group of Sherlock Shellingford, Nero Yuzurizaki, Hercule Barton and Cordelia Glauca.The two new members that have been revealed are:
12 year old Kazumi, voiced by Aimi Terakawa.
12 year old Alice, whose voice actor have yet to be casted.
The third season of Tantei Opera Milky Holmes (Detective Opera Milky Holmes) will air in Japan during the summer broadcasting season.