Seasons and episodes
1Season 1 Apr. 08, 2018
1 - 1Katrielle and the Mysterious House Apr. 08, 2018
1 - 2Katrielle and the Devil's Dress Apr. 15, 2018
1 - 3Katrielle and the Resurrected Corpses Apr. 22, 2018
1 - 4Katrielle and the Phantom Thief of the Century Apr. 29, 2018
1 - 5Katrielle and the Lucky Man May. 06, 2018
1 - 6The Bus that Leapt Through Time May. 13, 2018
1 - 7Ratman Returns May. 20, 2018
1 - 8The 100 Million Pounds that Left with the Wind May. 27, 2018
1 - 9Cat-Colored Skyscrapers Jun. 03, 2018
1 - 10Professor Layton and the Relics Treasure: Episode 1 Jun. 10, 2018
1 - 11Mystery at New Cinema Paradise Jun. 17, 2018
1 - 12Aspoirot and London's Holiday Jun. 24, 2018
1 - 13Katrielle and the Doppelgänger Jul. 01, 2018
1 - 14Genius Analyst Officer Geraldine Royer Jul. 08, 2018
1 - 15Katrielle and the Mystery Circles Jul. 15, 2018
1 - 16Katrielle and the Pandas' March Jul. 22, 2018
1 - 17Katrielle and the Monster of London Jul. 29, 2018
1 - 18Molentary Express and Three Incidents Aug. 05, 2018
1 - 19The Lonely Ghost Aug. 12, 2018
1 - 20Professor Layton and the Relics Treasure: Episode 2 Aug. 19, 2018
1 - 21Katrielle and the Sweet-Scented Street Labyrinth Aug. 26, 2018
1 - 22Ultra-High Performance Robot Socketman Sep. 02, 2018
1 - 23Katrielle and the Great Office Infiltration Strategy Sep. 16, 2018
1 - 24The Clockwork Sweets Sep. 23, 2018
1 - 25A Riverside Festival Love Story Sep. 30, 2018
1 - 26The Diary of Noah Oct. 07, 2018
1 - 27Fugitive Katri Oct. 14, 2018
1 - 28The Goddess of the Thames Smiles a Second Time Oct. 21, 2018
1 - 29Katrielle and the Nessie of Loch Nem Oct. 28, 2018
1 - 30Katrielle and the Immortal Vampire Nov. 04, 2018
1 - 31Katrielle and the Witch Wife Nov. 11, 2018
1 - 32Katrielle and the Prince of the Stars Nov. 18, 2018
1 - 33Katrielle and the Murder on the Spaceship Bengarian Nov. 25, 2018
1 - 34Professor Layton and the Relics Treasure: Episode 3 Dec. 02, 2018
1 - 35Professor Layton and the Relics Treasure: Episode 4 Dec. 09, 2018
1 - 36The Cursed London Collection Dec. 16, 2018
1 - 37Mintan's New Ambition Dec. 23, 2018
1 - 38Dancing Scotland Yard Great Investigation Line Jan. 06, 2019
1 - 39Katrielle and the Invisible Baby Jan. 13, 2019
1 - 40Geraldine Royer and the Final Customer Jan. 20, 2019
1 - 41Katrielle and the Strange Spirit Photo Jan. 27, 2019
1 - 42Great Detective Sherl O.C. Kholmes Feb. 03, 2019
1 - 43Katrielle and Horror Castle VR Feb. 10, 2019
1 - 44Katrielle and the Superman Chef Feb. 17, 2019
1 - 45Katrielle and the Ghost Club Feb. 24, 2019
1 - 46Katrielle and the Hundred Faces of Mona Lisa Mar. 03, 2019
1 - 47The Millionaire Ariadne's Conspiracy (1) Mar. 10, 2019
1 - 48The Millionaire Ariadne's Conspiracy (2) Mar. 17, 2019
1 - 49Professor Layton and the Relics Treasure: Episode 5 Mar. 24, 2019
1 - 50Professor Layton and the Relics Treasure: Final Episode Mar. 31, 2019
Creator
Cast
Katrielle "Kat" Layton (voice)
Noah Montoir (voice)
Geraldine Royer (voice)
Sheri (voice)
Luke Triton (voice)
Darjeeling Aspoirot (voice)
Professor Hershel Layton (voice)
Synopsis
The story is set in London and follows Katrielle as she solves mysteries with her talking dog Sherl. 
Original title 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～
TMDb Rating 8 7 votes
First air date Apr. 08, 2018
Last air date Mar. 31, 2019
Seasons 1
Episodes 50
Average Duration 24 minutes
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