Shinichi's mother, Yukiko Kudo, aids Ran's mother, Eri Kisaki, Ran and Conan in picking up the slack of an indebted Kogoro's investigation of a series of death threats made against a wealthy family patriarch.
A film developer is stabbed to death in the middle of a pitch black room, forcing Conan to figure out how the killer quickly moved into the room, committed the murder and got out without being heard or tripping in the dark.
In a shopping mall's parking area, Conan, Haibara and Agasa come across a group of friends who all drive different Porsches - and find themselves investigating a murder when a member of the group is found dead in one of them.
Following a lead to the Black Organization, Agasa, Conan and Haibara go to a design studio which belonged to her father and find themselves investigating a murder when the chief designer is poisoned.
Ran and Sonoko, accompanied by Jodie Starling, stand up for a friend when she is accused of shoplifting several items from the convenience store she works at and try to identify the real culprit.
Haibara and Jodie Starling come face to face with Vermouth, the Black Organization's enigmatic agent. Meanwhile, Kogoro and Sonoko attend a floating Halloween costume party where the host is shot with an arrow.
The Detective Boys help the police catch a notorious knife man when Ayumi becomes a witness to an attack and the key to the mystery lies in a strange S-like mark the perpetrator leaves behind.
A famous child actor hires Kogoro to find the mother who gave him up as a baby. The investigation takes him, Ran and Conan to a hotel, where a man also looking for the mother is murdered.
