3 episodesFirst aired 1 January 2008
E1Jan 200854m
This special episode is a spin-off of Galileo series with Kusanagi's colleague Yuge Shiro as the main character about an incident referenced in the first episode 01 and how it was solved. It is set 3 years prior to the events of season 1.
E2Oct 20081h 48m
The special is set 3 years prior to the drama series, with the story being related to a murder case that was partly referenced in the original show. Detective Kusanagi is looking to solve a murder mystery, and he gets back in touch with his former badminton teammate, the brilliant professor Yukawa Manabu.
E3Sept 20221h 42m
Four years before Silent Parade (2022), Yukawa and Kusanagi investigate the murder of a writer after a video found in his possession piques Yukawa's interest.