Case Closed : Season 1

Agasa takes the Detective Boys to watch a parade. They run into Sato, who explains that they received a bomb threat and believe it is related to a bomb case three years ago.

After a thorough investigation, Conan realizes that the mail truck never arrived and realizes the explosion was a distraction and what the true motives for the bombers are.

While walking around town the Detective Boys hear a woman in an apartment scream. They investigate the source of the screaming and find a dead old woman stuffed inside of a Sofa.

Sato reminisces about the bomber case three years ago. Three years ago, a bomber sent a fax to the Tokyo Metropolitan Police containing the location of a bomb in the form of a riddle. Matsuda discovers the bombs location and realizes that the bomb contains a clue an even larger bomb and that the clue is only revealed during the last three seconds before detonation; Matsuda sacrifices his life and allowed the police to locate the second bomb.

Kogoro was invited to make an introduction in an episode of a popular detective TV serial.

During a break in the filming, the star was discovered with his throat slit, with Ruri over the body and her hands bloody. No murder weapon could be found. The immediate suspects were members of the cast, including Ruri and the Nagumo father-son.

Three game designers arrive at Kogoro's agency to ask for his assistance to look for their game programmer Subaru Itakara. He was last heard in a video mail which shows him in a hotel with an igo, shogi, and chess set.

A forensic officer reveals that the body is missing a sock impression on the right ankle, this causes Conan to realize who the murderer is.

Ran tells Conan that Akai is an FBI agent causing Conan to wonder what the FBI are doing in Japan

Conan uses his voice changing bow tie to impersonate Itakara and is able to learn of the location and time of their planned meeting.

Once arriving at their destination point, Conan reveals that the two people are the jewelry robber. Conan reveals that they hijacked a car as evidenced by the man's inability to handle the foreign car and how coins were found in the ashtray yet the man is a smoker.

The Junior Detective Club accompanied Ayumi to an apartment where she was promised by the owners, to replace her own broken ningyō (traditional Japanese doll), a complete set of 7-tier Hinamatsuri dolls if she could correctly position the dolls.

The police was called into what appears to be a break-in that occurred while all occupants happened to be out.

Kogoro, Ran, and Conan are on a hiking trip. When they reach the observation deck, they witness a man jump off the edge to his death. The body was found at the bottom of the hill and is identified to be Takaya Hirai. Conan investigates the scene and realizes that it was a murder made to look like a suicide.

Jiroo Kuroki calls Kogoro to help his artist sensei, Shizusan Hayakawa's, depression due to the fact he is unable to draw anymore due to his age. During a fishing trip, Hayakawa's maid finds that he had hanged himself on bamboo.

Kogoro, Ran, and Conan attend a professional wrestling match where a wrestler challenges the legendary wrestler Wolf Face. Before the match begins, Wolf Face's challenger, Hyota Nagase is found dead in his room. A secret video camera reveals that a man wearing Wolf Face's mask murdered Hyota.

After re-watching the murder on the camera, Conan realizes how they will find the murderer.

Kogoro, Ran and Conan are in a rental car when it breaks down in a mountain pass in the middle of nowhere. They can't use their cellphones so they find a building and knock and ask to use a phone. It is a massage chair development lab and 3 developers have come up with new prototypes. There is obvious tension between the 3 developers and the President of the company, and things get even more tense when one of the developers stabs the President and drives away, only to crash his car and die.

With security cameras, Conan manages to have some more information. The analysis of the route taken by the alleged offender, allows the boy to understand the facts as they occurred. Conan finds the offender and reveals all through Kogoro.

Yuuichi Kusaka, a client of Kogoro's, is found dead in the park. Conan then sets up a meeting at Kogoro's office where the police and two suspects are gathered. After knocking Kogoro out with a tranquilizing and using his voice changing bow-tie to impersonate Kogoro, Conan reveals the culprit.

Conan and the Detective Boys go to visit Jun, one of their friend who is hospitalized. The boy wants to go to game room and asks his friends to help him sneak out. The children accept and Conan takes the place of Jun in the hospital. A man enters the room, however, believing that Conan is Jun kidnaps Conan and asks for a ransom from Jun's family.

Jun and Detective Boys back to the hospital and so the police understood that Conan was abducted as a hostage instead of Jun. Conan manages to escape from the place where it is locked, go to the hospital and is questioned by the police.

Heiji, Kazuha and a man named Kasukawa are held hostage in an attic of someone's home. Meanwhile, Conan, Ran, and Kogoro are tired of waiting for the two and begin searching for them based on clues from the last phone call.

While held at gunpoint, Heiji sends a modified version of the code to Kogoro and asks him to solve it. Conan manages to solve the code.

Heiji is asked by Kasukawa to investigate a man who is lurking near the house of Ryoko Morozumi. An arsonist, dubbed the Red Horse after the red horse figurines he leaves behind at the fires, has been burning precincts in order.