A Ghost Ship Murder Case

Part 1
Conan and Ran accompany Kogoro to an island, to where Kogoro was invited, to make a speech about a ghost ship that had been lost at sea 7 years before. Kogoro arrives on stage completely drunk. A miniature bomb explodes, nearly killing him. Conan realizes that the supposed ghost and ghost ship at the shrine in the pirate's cave are being manipulated by someone on the ship. Attacked at night, Kogoro flees, finding the lighthouse care-taker with a bloody sword protruding from his neck. The townspeople believe Kogoro is responsible, but he insists on his innocence.

Part 2
Conan proves that Kogoro did not kill the caretaker. Next, Conan enters the cave to show that the sounds were from the wind in the tunnels. Conan finds a staircase which breaks away to reveal another dead man and the killer. Conan deduces that the ghost ship was stuck in this part of the cave for 7 years due to a cave-in. Conan finds the gold hidden in the bricks of the staircase covered in moss. Another cave-in occurs, forcing Conan and the killer to leave. The gold is sealed inside the cave.

Resolution
« Hide spoilersThe culprit is Goro Kinoshita. Kouji Hamada was originally one of its crew who killed his comrades to keep the gold to himself and set up an identity as the island's new lighthouse keeper, whose name is apparently Aoki. Kinoshita captured and tortured him for the ship's location, later killing him. He then killed Uehara to prevent him from getting the spoils as well. Conan deduces the gunshot wound he received from Uehara was self-inflicted given how it only scorched skin. and that there was a gunpowder burn (indicating indirect close range fire).

Motive
His motive was for the missing billion yen gold on the Shiki Island Ghost Ship.

Trivia

 * Insert song: "Kimi ga Ireba" by Iori
 * This is the first two-part Anime Original episode.