The Exchange Letter

Michiko Oshitani, who lived in Shiga Prefecture, is found dead at an apartment in Tokyo. She was strangled to death. Mutsuo Koshikawa is the owner of the apartment and he goes missing. Detectives including Yuhei Matsumiya who is a cousin of Detective Kyoichiro Kaga , have difficulties in solving the case. They can't find a connection between Michiko Oshitani and Mutsuo Koshikawa. They soon learn that Michiko Oshitani came to Tokyo to visit Hiromi Asai . They graduated from the same school, but there isn't a connection between Hiromi Asai and Mutsuo Koshikawa. Detective Yuhei Matsumiya finds something near Michiko Oshitani's body. That something has the names of 12 bridges surrounding the Nihonbashi area of Tokyo. Detective Kyoichiro Kaga learns of the clue and becomes agitated. There's a connection with his late mother

Fifteen years ago in a barren stretch of the Pacific, a cruise ship collided with an iceberg and was lost at sea. More than a decade later, Hideto Yashiro—a ship engineer—died in a fatal car accident. The unlikely connection between these events only comes to light on the luxury liner St. Aphrodite during her maiden voyage. Aboard it on a much needed vacation, Kogorou Mouri, his daughter Ran, Conan Edogawa, and the Detective Boys enjoy a trip provided by Sonoko Suzuki's family. But their fun is soon cut short when a game of hide-and-seek leads to Sonoko's disappearance.

Conan Edogawa comes to a bathhouse with Ran Mouri and Ai Haibara. There, he sees suspicious men in the dressing room of the men's bath. However, Conan falls down in the bathhouse and loses consciousness. The two suspicious men, Tatsu and Kondo, take him away in a car. The two belong to the underworld and seem to be working at someone's request. Meanwhile, a woman named Kanae visits the Mouri Detective Agency to request an investigation into her husband's affair. She shows them a picture, and the husband in the picture is one of the culprits who kidnapped Conan.

While visiting Hachijo-jima, Conan sneaks aboard a security boat heading to the Pacific Buoy, an off-shore facility constructed near the coasts built to connect surveillance cameras used by police forces around the world. However, an engineer gets abducted! An eerie sound of a propeller hums underwater as a dark figure begins to creep toward Ai Haibara... When the forbidden Black Box is opened, the sealed-away past will surface above the treacherous waves!

Ran’s secret past revealed! Ten years ago, something happened between her mom and dad. Now, plagued by nightmares, Ran is starting to remember… Meanwhile, a murderous card dealer breaks out of jail to seek revenge. His target: Ran’s father. Can Conan stop him in time and save his girlfriend’s family?

A Japanese actress begins having strange visions and experiences after landing a role in a horror film about a real-life murder spree that took place over forty years ago.