Ep. 155: Conan Investigates the Locked Bathroom Murder at the Old Woman's Home
Aired on August 2, 1999Filler

155
Detective Moore, Rachel, and Conan visit an elderly woman who leads them to her grandson's residence. Upon arrival, they discover the grandson has been murdered. The crime scene presents a puzzling locked bathroom door, raising questions about how the act was committed. While Detective Moore is available to handle the investigation, Conan chooses to solve the case independently under his own identity. The group must determine the method used to lock the door from the inside or if the lock was manipulated, relying on Conan's deductive skills rather than the detective's assistance to uncover the truth behind the death.
Episodes
- Ep. 151 · Moore uncovers the truth behind the exploding car case with Conan's guidance
- Ep. 152 · Rachel encounters a mysterious old man on the bus who vanishes, leading to a fraud investigation and a kidnapping rescue.
- Ep. 153 · Sonoko's Dangerous Summer Story (Part 1)
- Ep. 154 · Sonoko Endures a Deadly Summer Crisis Involving a Serial Killer and a Car Trap
- Ep. 155 · Conan Investigates the Locked Bathroom Murder at the Old Woman's Home
- Ep. 156 · Detective Sato chases a suspect through a school while trapped with him.
- Ep. 157 · Detective Sato's Love Story Part 2 Resolution and Bomb Crisis
- Ep. 158 · Kogoro, Ran, and Conan investigate a murder on a Sunday train
- Ep. 159 · The Mysterious Death of the Pagoda Manager in the Five Storied Pagoda Legend Part 1