Ep. 27: Detective Higeoyaji and Atom investigate a locked-room mystery involving Skunk and the magnetic robot Gadem.
Aired on October 12, 2003

27
Detective Higeoyaji encounters a boy named Sharaku while searching for a kitten. Sharaku asks for help finding his missing mother, leaving only a mysterious sphere as a clue. Meanwhile, Skunk commits crimes to steal treasure from a secret room by announcing each offense. Atom joins the investigation and becomes Higeoyaji's assistant after chasing Skunk. The robot-hating detective and Atom work together to uncover the truth behind the apparent locked-room crime. They discover that Skunk is using Gadem, a special magnetic robot capable of free assembly, to commit the offenses. Sharaku's mother had previously discovered the mechanism of Gadem. To save her and capture Skunk, Atom and Higeoyaji confront the magnetic robot controlled by Skunk.
Episodes
- Ep. 23 · Atom loses memory after saving Earth from falling satellite Ashura
- Ep. 24 · Micro Bears descend upon the town, isolating residents with comforting illusions created by Shadow.
- Ep. 25 · Dr. Ochanomizu and Atom attend Deep City's inauguration while facing a fabricated environmental system.
- Ep. 26 · Atom is framed for planting a wormhole projector on the Minerva airship while Katari's team targets robots.
- Ep. 27 · Detective Higeoyaji and Atom investigate a locked-room mystery involving Skunk and the magnetic robot Gadem.
- Ep. 28 · Robots trapped in exploding plant while humans refuse rescue
- Ep. 29 · Uran and the Famous Detective / The Case of the Phantom Fowl
- Ep. 30 · Atom joins the Core Raider team to explore a vast underground cavern despite the captain's hostility.
- Ep. 31 · Goonon's Big Adventure / Gideon