Famous authors in the city are found murdered in very unusual crime scenes. CID figure out that the murders are committed by the same person, a serial killer. When they investigate further, they learn that there were similar crimes committed around 5 years ago by another serial killer named TRICON, but that he has been in a high security prison for the last 4 years- meaning a copycat killer is on the loose. Watch as CID team up with TRICON to try and catch this copycat.