Strategy Above the Depths

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Movie 9

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Official trailer
Title: Strategy Above the Depths
Japanese Title: 名探偵コナン 水平線上の陰謀(ストラテジー)
(Meitantei Konan: Suiheisenjō no Sutoratejii)
Original airdate: April 9, 2005
Broadcast rating when aired on television: 13.1% (aired on April 3, 2006)[1]
Cast: Conan Edogawa
Ran Mouri
Kogoro Mouri
Ai Haibara
Detective Boys
Sonoko Suzuki
Hiroshi Agasa
Juzo Megure
Wataru Takagi
Miwako Sato
Ninzaburo Shiratori
Kazunobu Chiba
Officer Tome
Miss Tome
Shinichi Kudo
Eri Kisaki
Case solved by: Professor Agasa (via Conan)
Kogoro Mouri
Director: Yasuichiro Yamamoto
Screenplay: Kazunari Kouchi
Storyboard: Yasuichiro Yamamoto
Masaharu Okuwaki (asst.)
Hajime Kamegaki (asst.)
Toshiki Hirano (asst.)
Technical Director: Yasuichiro Yamamoto
Animation Director: Masatomo Sudo (chief)
Junko Yamanaka
Seiji Muta (asst.)
Yoshiharu Shimizu (asst.)
Chiharu Sato (asst.)
Akio Kawamura (asst.)
Masahiko Itojima (asst.)
Character Design: Masatomo Sudo
Mechanical Design: Yasuhiro Moriki
Layout checker: Seiji Muta, Yoshiharu Shimizu, Chiharu Sato, Akio Kawamura, Masahiko Itojima
Design Works: Junko Yamanaka
Theme song: Natsu o Matsu Sail no Yō ni
Soundtrack: Detective Conan "Strategy Above the Depths" Original Soundtrack
Prev movie: « Magician of the Silver Sky
Next movie: The Private Eyes' Requiem »
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Detective Conan Movie Novelization

Strategy Above the Depths is the 9th movie in the Detective Conan franchise. It was released in Japan on April 9, 2005.

Gadgets introduced





Fifteen years ago, a ship named "St. Yashiro Number 1" sank during an accident when a bomb exploded on deck after avoiding an iceberg. Shortly before that, the captain, Takeo Okita, was killed by poison in his coffee. His first officer, Wataru Kaido, was suspected of the crime but never convicted as the evidence sank with Okita's body.

Murder (Past)

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Location: Number 1 St. Yashiro
Victim: Takeo Okita
Time: 15 years ago
Cause of death: Poison in Coffee
Suspects: Wataru Kaido
Murder (Past)
Location: Number 1 St. Yashiro
Victim: Kusaka's father
Time: 15 years ago
Cause of death: Ship explodes and sinks
Suspects: Wataru Kaido

Everyone escaped in time, except for a sailor named Kusaka, who discovered Okita's body and drowned with the sinking ship.

Half a month before the story begins, Hideto Yashiro, an architect working for the Yashiro group, suffers a fatal heart attack while driving and crashes off a cliff with his car.

Accident? (Past)

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Location: Bottom of the cliff
Victim: Hideto Yashiro
Age: 49 years old
Cause of death: Heart attack
While he was driving, he had a heart attack and fell off the cliff.

Conan and friends are invited by Sonoko to join her in a cruise on the luxury liner "St. Aphrodite," belonging to the Yashiro group. Shortly before the ship leaves, Hideto Yashiro's body is found and the police determine he died from a heart attack.

Ran has won a prestigious karate tournament and the Detective Boys decide to congratulate her by making a medal out of seashells for her.

Professor Agasa shows Conan his newest invention before dinner: Cuff Link Speakers. Kogoro believes them to be ordinary cufflinks, grabs them out of Conan's hands and declares he should wear them with his suit because cufflinks only belong to "elegant" men like Kogoro.

Dinner takes a long time to arrive and Conan cleans his glasses when Hironari Kusaka, a scriptwriter, accidentally bumps into him. Kusaka recognises Kogoro and greets him excitedly. He also introduces Kogoro to Minako Akiyoshi, the lead designer working on the ship. Akiyoshi talks about the ship and tells everyone that Hideto Yashiro, who was found dead a few days earlier, was married to the current company president, Takae Yashiro.

The next day, the Detective Boys, Ran, and Sonoko decide to play hide and seek on the cruise ship. The kids sneak Ran's medal into her jacket, wanting to surprise her. Sonoko and Ai are picked as chasers. While "hiding", Conan finds a volley ball on deck and plays with it, kicking it against the nearest wall and dribbling. Ai finds him easily.

Eventually, everyone is found except for Ran. Conan reminisces that Ran was always very good at hide and seek.

At the same time, Kusaka calls Akiyoshi, telling her he has finished his newest script and that he will now read it to her, instructing Akiyoshi to only comment when he is finished. He puts a tape recorder near the phone receiver, presses play, puts on a jacket and sneaks out of the room into CEO Yashiro's room, where he stabs her with a knife.


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Location: Aphrodite Cruise Ship - Yashiro's room
Victim: Takae Yashiro
Age: 51 years old
Cause of death: Stab wound in abdomen
Suspects: Hironari Kusaka
Takae is stabbed in the abdomen while she was drying her hair.

Entaro Yashiro, Takae's father, received a threatening note earlier that same morning, saying "I know what you did 15 years ago, meet me in the basement marina at 10:15."

Sonoko looks for Ran in the ship's basement when someone suddenly knocks her unconscious.

Attempted Murder

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Location: Aphrodite Cruise Ship - Marina
Victim: Sonoko Suzuki
Attack types: Freezing
Suspects: Entaro Yashiro
Sonoko was attacked, then put in the mortuary room.

At 10:15, Kusaka reveals himself to Entaro Yashiro in the marina and attacks him. Entaro fights back and seemingly overpowers Kusaka.


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Location: Aphrodite Cruise Ship - Marina
Victim: Entaro Yashiro
Age: 78 years old
Cause of death: Stab wound
Suspects: Hironari Kusaka
Entaro fights with Kusaka, who tried to kill him, and seemingly overpowers Kusaka, before being thrown out in the ocean with his chest stabbed.

Kusaka knocks Entaro out and opens the basement door, wanting to throw his body into the ocean. Entaro comes to and tries to choke Kusaka, who defends himself by stabbing Entaro fatally into the chest and throwing him out of the ship.

Sonoko wakes up in a box and feels icy cold. With a Detective Boys badge one of the children gave her before their game began, she contacts the others and cries for help. Conan tries to locate her using his glasses, but the sensors don't work after his glasses were knocked off by Kusaka the previous evening. They find Sonoko just in time and help her to the ship's doctor.

Inspector Megure, CSI Officer Tome and Miss Tome, Takagi, and Shiratori land on the cruise ship with a helicopter, having been alerted of Takae's murder and Entaro's disappearance. Kusaka quickly becomes their main suspect as his father died when the St. Yashiro 1 sank 15 years earlier, but the police discover he has an alibi, having been on the phone with Akiyoshi when the murder occured. Conan investigates Kusaka's room and discovers a tape recorder, but the tape it contains is blank.

The police theorise that Hideto Yashiro's death was linked with the two cases on the ship.

Later that day, the passengers are invited to a gala evening. News of the murder investigation makes the rounds and the guests start to panic. Kogoro calms everyone by announcing he has solved the case, accusing Minako Akiyoshi of killing Takae and possibly also Entaro Yashiro.

Conan, who thinks Kogoro is wrong, asks Agasa's help. He mimics Agasa's voice with his bowtie while Agasa lip-syncs.

Conan/Agasa announce Kusaka is the actual murderer and that he has dried blood on his hair which belonged to Takae Yashiro.

Cruise ship bombing

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Location: St Yashiro
Culprit: Hironari Kusaka

Kusaka shouts that he has planted bombs on the ship, wanting to take revenge for his father, and escapes on a motorboat. Conan chases after him with the other boat and notices the Detective Boys have snuck onto the boat as well. Conan stuns Kusaka and, at the same time, a bomb detonates on the ship. The ship is evacuated. Ran stays behind trying to retrieve the medal the Detective Boys made for her which she dropped in her hiding spot. She slips, hits her head on the wall and falls unconscious.

Looking back at the case, Conan realizes Kusaka's alibi was too simple and figures out who the actual murderer was.


  • Resolution


    • Akiyoshi's given name "Minako" (美波子) means "child of beautiful wave". Her name is a reference to Goddess Aphrodite or Venus (which is also the name of the ship that she designed) who is born from the ocean in some of the myths. We already understand that she is Okita's daughter, from her photo as an high school student in the captain's cabin. Open spoiler box to see images.


    In other languages

    Language Title Translation
    Flag of Catalonia Catalan (Catalan dub) Estratègia sobre les profunditats Strategy above the Depths
    Flag of China Chinese 水平线上的阴谋 Conspiracy Above the Ocean Line
    Flag of France French (Subbed) Stratégie en Profondeur In-Depth Strategy
    Flag of Germany German Das Komplott über dem Ozean The Conspiracy Above the Ocean
    Flag of Italy Italian La strategia degli abissi The Strategy Above the Depths
    Flag of Thailand Thai ยุทธการเหนือห้วงทะเลลึก Operation Above the Deep Ocean
    Flag of Vietnam Vietnamese Âm mưu trên biển Conspiracy Above the Ocean


    See also

    Detective Conan Movies
    Movies Movie 01: The Time-Bombed SkyscraperMovie 02: The Fourteenth TargetMovie 03: The Last Wizard of the CenturyMovie 04: Captured in Her EyesMovie 05: Countdown to HeavenMovie 06: The Phantom of Baker StreetMovie 07: Crossroad in the Ancient CapitalMovie 08: Magician of the Silver SkyMovie 09: Strategy Above the DepthsMovie 10: The Private Eyes' RequiemMovie 11: Jolly Roger in the Deep AzureMovie 12: Full Score of FearMovie 13: The Raven ChaserMovie 14: The Lost Ship in the SkyMovie 15: Quarter of SilenceMovie 16: The Eleventh StrikerMovie 17: Private Eye in the Distant SeaLupin III vs. Detective Conan: The Movie (crossover) • Movie 18: Dimensional SniperMovie 19: Sunflowers of InfernoMovie 20: The Darkest NightmareMovie 21: The Crimson Love LetterMovie 22: Zero the EnforcerMovie 23: The Fist of Blue SapphireThe Scarlet Alibi (compilation) • Movie 24: The Scarlet BulletMovie 25: The Bride of HalloweenMovie 26
    Related Cases 16 Suspects!? (movie 4) • Conan, Heiji, and the Vanished Boy (movie 7) • Time Travel of the Silver Sky (movie 8) • Follow the Vanished Diamond! Conan & Heiji vs. Kid! (movie 10) • A Challenge from Agasa! Agasa vs. Conan and the Detective Boys (movie 11) • Magic File 2: Shinichi Kudo, The Case of the Mysterious Wall and the Black Lab (movie 12) • Lupin III vs. Detective Conan (crossover) • Magic File 3: Shinichi and Ran, Memories of Mahjong Tiles and Tanabata (movie 13) • Magic File 4: The Osaka Okonomiyaki Odyssey (movie 14) • Magic File 5: Niigata~Tokyo Souvenir Capriccio (movie 15) • Bonus File 1: Flower of Fantasista (movie 16) • The Missing Sweets in the Old Shop (movie 17) • The Coded Invitation (movie 18) • Promise with a J-Leaguer (movie 16) • Munch's Missing Scream (movie 19) • The Shadow Approaching Amuro (movie 20) • The Mystery of the Vanished Black Belt (movie 21) • The Melting Cake! (movie 22) • The J League Bodyguard (movie 16) • Intrigue at the Food Court (movie 23) • The Beika City Shopping Center Garbage Bin Mystery (movie 24) • The Flying Jack-o'-lantern (movie 25)