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Episode
- Episode 1 : Katrielle and the Mysterious House
- Episode 2 : Katrielle and the Devil's Dress
- Episode 3 : Katrielle and the Resurrected Corpses
- Episode 4 : Katrielle and the Phantom Thief of the Century
- Episode 5 : Katrielle and the Lucky Man
- Episode 6 : The Bus that Leapt Through Time
- Episode 7 : Ratman Returns
- Episode 8 : The 100 Million Pounds that Left with the Wind
- Episode 9 : Cat-Colored Skyscrapers
- Episode 10 : Professor Layton and the Relics Treasure: Episode 1
- Episode 11 : Mystery at New Cinema Paradise
- Episode 12 : Aspoirot and London's Holiday
- Episode 13 : Katrielle and the Doppelgänger
- Episode 14 : Genius Analyst Officer Geraldine Royer
- Episode 15 : Katrielle and the Mystery Circles
- Episode 16 : Katrielle and the Pandas' March
- Episode 17 : Katrielle and the Monster of London
- Episode 18 : Molentary Express and Three Incidents
- Episode 19 : The Lonely Ghost
- Episode 20 : Professor Layton and the Relics Treasure: Episode 2
- Episode 21 : Katrielle and the Sweet-Scented Street Labyrinth
- Episode 22 : Ultra-High Performance Robot Socketman
- Episode 23 : Katrielle and the Great Office Infiltration Strategy
- Episode 24 : The Clockwork Sweets
- Episode 25 : A Riverside Festival Love Story
- Episode 26 : The Diary of Noah
- Episode 27 : Fugitive Katri
- Episode 28 : The Goddess of the Thames Smiles a Second Time
- Episode 29 : Katrielle and the Nessie of Loch Nem
- Episode 30 : Katrielle and the Immortal Vampire
- Episode 31 : Katrielle and the Witch Wife
- Episode 32 : Katrielle and the Prince of the Stars
- Episode 33 : Katrielle and the Murder on the Spaceship Bengarian
- Episode 34 : Professor Layton and the Relics Treasure: Episode 3
- Episode 35 : Professor Layton and the Relics Treasure: Episode 4
- Episode 36 : The Cursed London Collection
- Episode 37 : Mintan's New Ambition
- Episode 38 : Dancing Scotland Yard Great Investigation Line
- Episode 39 : Katrielle and the Invisible Baby
- Episode 40 : Geraldine Royer and the Final Customer
- Episode 41 : Katrielle and the Strange Spirit Photo
- Episode 42 : Great Detective Sherl O.C. Kholmes
- Episode 43 : Katrielle and Horror Castle VR
- Episode 44 : Katrielle and the Superman Chef
- Episode 45 : Katrielle and the Ghost Club
- Episode 46 : Katrielle and the Hundred Faces of Mona Lisa
- Episode 47 : The Millionaire Ariadne's Conspiracy (1)
- Episode 48 : The Millionaire Ariadne's Conspiracy (2)
- Episode 49 : Professor Layton and the Relics Treasure: Episode 5
- Episode 50 : Professor Layton and the Relics Treasure: Final Episode
レイトン ミステリー探偵社 ～カトリーのナゾトキファイル～ - Season 1 Episode 20
