Sachiko Shimamura (Case Closed)

Sachiko Shimamura (Yoko Soumi) is the main villainess of "Kogoro's Date Murder Case", episode 4.13 of Case Closed (airdate March 16, 1998). She was an import sales director and the roommate of Kazumi Takenaka, a middle school teacher.
As revealed later on in the episode, Sachiko had begun selling illegal imports a year prior to the episode, and Kazumi had begun forcing Sachiko to pay her on a monthly basis not to report her to the police. After growing tired of giving in to her greedy roommate's demands, Sachiko decided to kill Kazumi to end the blackmail.
Sachiko went about murdering Kazumi by breaking into their apartment via the open window after jumping to their balcony from the emergency exit. After that, the evil Sachiko made noises in the dining room to wake Kazumi up before stabbing her to death with a knife. Afterwards, Sachiko ran back to her car to dispose of the evidence, planning to use footage she was recording of the pub across the street from her store to establish an alibi.
But as she was getting into her car, Sachiko was approached by Kogoro Mouri, who had went out on a date with Sachiko previously. After realizing that Kogoro thought it was later than it really was due to being drunk, Sachiko decided to use Kogoro to establish her alibi, taking him to a bridge to do star watching and changing her car clock to trick Kogoro into thinking he'd run into her earlier than he really had. Once Sachiko and Kogoro discovered Kazumi's body, it was initially believed by Kogoro and inspector Juzo Megure that Sachiko had a clear cut alibi and that Kazumi was killed by a robber.
But eventually, Kogoro (with help from Conan Edogawa) was able to deduce Sachiko's secret and Kogoro began to confront her when he accidentally knocked himself out on the table, forcing Conan to impersonate him and reveal Sachiko as her roommate's killer. The key piece of evidence against Sachiko was her pen, which Kazumi had used before her death and which had fallen by her body after Sachiko stabbed her. In a panic, Sachiko grabbed the pen and put in her coat, which she later placed in the back of her car, but unbeknownst to her, the pen fell from the coat and was picked up by Kogoro. Cornered, Sachiko confessed to murdering her roommate, revealing Kazumi's blackmail scheme against her and how she felt killing her would be easier than facing up to her actions. Sachiko was soon after arrested, and as she was taken away, she revealed that she hadn't killed Kogoro to cover her tracks out of genuine feelings for him.
== Trivia ==
* In the English dub, Sachiko's name is translated to Sonia Shadowly and she is voiced by Kate Borneman.
Category:1990s
Category:Anime Villainess
Category:Brunette
Category:Greedy
Category:Hero's Friend
Category:Knife
Category:Murderer
Category:Murder: Stabbing
Category:Villainous Reveal
Category:Fate: Arrested