Ep. 75: The group stays at a mansion and is picked off one by one
Aired on July 6, 1983Filler

Ataru, Lum, Shinobu, Mendo, Onsen-Mark, Sakura, Cherry, and the Stormtroopers visit a mansion for a stay. They are gradually eliminated one by one in a manner reminiscent of the nursery rhyme Cock Robin. This scenario serves as an adaptation of the novel And Then There Were None. The characters face a series of mysterious deaths while isolated at the location. The narrative follows the pattern of the source material where individuals are removed sequentially. The group dynamics shift as members are taken out during their time at the estate. The events unfold with a focus on the mystery surrounding the disappearances.
Episodes
- Ep. 71 · Shinobu becomes entangled with adopted heir Makoto of the wealthy Kobayakawa family
- Ep. 72 · Ataru directs a school film involving Lum, Stormtroopers, and the student body
- Ep. 73 · Ataru and Lum face chaos as Sakura and Sakuranbo clash over summoned creatures
- Ep. 74 · Onsen-Mark narrates a tale of a cursed willow tree that Ataru damages with a carved symbol.
- Ep. 75 · The group stays at a mansion and is picked off one by one
- Ep. 76 · Ten's Firefighter Mother Visits Earth While Ataru Causes Trouble
- Ep. 77 · Ataru Poisoned by Ran's Cupcake, Lum Seeks Magical Antidote
- Ep. 78 · Ataru's Mother Falls Unconscious After a Mall Accident
- Ep. 79 · The Mendo Family hosts a Summer Christmas party with a tree climbing contest for prizes