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Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy is the seventh mainline game in the Professor Layton series. It follows Katrielle Layton, the daughter of Professor Layton. With the help of her friend Ernest Greeves and a talking dog named Sherl, Kat solves various smaller mysteries in London in the hope of finding her missing father.

The game was officially revealed on July 27, 2016, during LEVEL-5 Vision 2016[4]. The name "Lady Layton" was already leaked the day beforehand due to a leaked trademark of LEVEL-5[5].

The puzzles in the game are designed by Kuniaki Iwanami, due to the passing of Akira Tago.

Before the game's release, it was being promoted through a global campaign, which had people solve puzzles in the real world all around the globe. During this campaign, it was possible to obtain items that could be transferred to the actual game once it was released.

Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy was released for Nintendo 3DS, iOS, and Android in 2017. An extended Nintendo Switch port, titled Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy - Deluxe Edition, was released in Japan on August 9, 2018 and internationally on November 8, 2019. A small update under the name Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy - Deluxe Edition Plus was released in Japan on July 8, 2021, which adds the option to change to the voice actors featured in the anime. It is also be available as DLC for the normal Deluxe Edition in Japan.

Gameplay Changes[]

  • On iOS/Android, since the entire screen is touch sensitive, including the "top" screen, you can simply tap the places to investigate directly, instead of moving the magnifying glass over to it.
    • This is similar to how the Professor Layton games worked on the Nintendo DS.
    • The magnifying glass from the 3DS games is also still present; allowing the player to choose between both styles.
  • You can now revisit previous cases at any time.
    • Once a case is solved, revisiting it will show how many puzzles are left to solve and how many hint coins are left to find. The map will also highlight all locations where everything has been solved/found.
    • Some puzzles will only appear after the case has been solved.
    • Due to this mechanic; it is now impossible to miss any puzzles. As such, Granny Riddleton is now a regular character; though she still occasionally gives a puzzle of her own.
  • Multiple cases may unlock at once, and can be solved in any order.
  • Some spots now hide ten hint coins instead of just one. If one of these spots is tapped, all coins will fly out simultaneously as a fountain.
  • Picarats will now be removed for up to four incorrect answers, instead of two.
  • Katrielle looks can be changed thanks to the Wardrobe.
  • The Layton Detective Agency interior decor can be changed thanks to Fengshui.

Deluxe Edition changes[]

The Nintendo Switch release, Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy - Deluxe Edition, features several gameplay tweaks and additional content compared to previous versions:

  • Puzzle display and controls have been adapted to fit a single screen.
  • All of the previously-paid downloadable content outfits, and the 15 associated puzzles, are now included in the base game.
  • Kat's pyjamas and the ancient civilisation decor set, which were previously exclusive rewards from the Real World Puzzle Solving campaign, are now included in the base game.
  • Most collaboration items from the mobile version have been removed, the exceptions being the Pig-dragon cushion (referencing Snack World) and the Foxy professor pillow.
  • 53 new outfits for Katrielle (totaling 73) and 3 new outfits for Sherl (totaling 4) have been added. However, most of Kat's outfits are re-textured versions of the 20 previously-existing outfits.
  • The availability of Kat's outfits differ between the Japanese and international versions.
    • In the JP version, 51 of the new outfits can only be unlocked through scanning "Nazotoki charms": real-world NFC toys that are purchased separately. Scanning a charm will unlock a matching outfit in-game, and Kat will wear a 3D model of each charm somewhere on its corresponding outfit. Additionally, each Nazotoki outfit in the wardrobe menu displays a small 2D image of its corresponding charm.
    • In the international version, all Nazotoki-exclusive outfits are included in the base game at no additional charge. The charms are still displayed on the outfits and in the wardrobe menu in-game, but with no indication of what they are.
  • 51 puzzles from the 3DS version have been completely replaced with new puzzles, and 4 puzzles from the 3DS version have had their puzzle index number changed.

Characters[]

Major Characters[]

The Seven Dragons[]

The Seven Dragons is the name given to the seven most wealthy people of London.

Minor/Recurring Characters[]

Puzzles[]

See Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy/List of puzzles

Downloadable Content[]

# Item Price[n 1]
1 Dating Dress & Puzzle (Starry Starry Night S1) €1.89 / $1.99
2 Equestrian Ensemble & Puzzle (Magic Numbers S1) €1.89 / $1.99
3 Cardinal Cape Coat & Puzzle (Level Up S1) €1.89 / $1.99
4 Monotone Minidress & Puzzle (Pop-Up Prairie Dogs S1) €1.89 / $1.99
5 Retro Refit & Puzzle (A Knight's Quest S1) €1.89 / $1.99
6 Sky-blue Statement & Puzzle (Double Trouble S1) €1.89 / $1.99
7 Pleated Pleaser & Puzzle (Box Drop S1) €1.89 / $1.99
8 Denim Daily & Puzzle (Box Drop S2) €1.89 / $1.99
9 Imperial Elegance & Puzzle (Posing Poltergeists S1) €1.89 / $1.99
10 Picnic Blanket Wrap & Puzzle (Posing Poltergeists S2) €1.89 / $1.99
11 Daddy's Girl & Puzzle (Starry Starry Night S2) €1.89 / $1.99 / £1.79
12 Luke Lookalike & Puzzle (Magic Numbers S2) €1.89 / $1.99 / £1.79
13 Emmy Impersonation & Puzzle (Level Up S2) €1.89 / $1.99 / £1.79
14 Anton-ish Attire & Puzzle (Double Trouble S2) €1.89 / $1.99 / £1.79
15 Aurora Again & Puzzle (Posing Poltergeists S3) €1.89 / $1.99 / £1.79
16 Floral Finesse Free (3DS)
17 Professor Layton cushion Free (3DS)
Total (if bought individually) €28.35 / $29.85 (mobile app version)
$9.95 (For #11-15 in the 3DS version)
Kat's Clobber & Puzzles Set (1-10) €16.99 / $22.46
Kat's Cosplay & Puzzles Set (11-15) €7.49 / $7.99 / £7.19
Total (if bought as packs) €24.48 / $32.37 (mobile app version)
$7.99 / £7.19 (For the Cosplay Set in the 3DS version)

Cases[]

  1. Prologue: Lady and a Tramp
  2. Case 1: The Hand That Feeds
  3. Case 2: Murder on the Thames
  4. Case 3: The Stolen Kiss
  5. Case 4: Pet Pandemonium
  6. Case 5: Ghost Busted
  7. Case 6: An Unexpected Windfall
  8. Case 7: Ratman Returns
  9. Case 8: The Goddess of the Thames
  10. Case 9: The Battle of Hastings (Originally: Hastings Off the Beat)
  11. Case 10: The Importance of Being Ernest
  12. Case 11: Katrielle Layton: WANTED!
  13. Case 12: Diamonds Aren't Forever (Originally: The Million Pound Puzzler)

Museum[]

See: Layton Museum

This is the page that shows what you can unlock with points from the museum.

Plot[]

Only read this section after finishing the game! Click to skip spoilers.

Prologue: Lady and a Tramp[]

Private detective Katrielle Layton, daughter of the famous Professor Hershel Layton, awakens from a nightmare about her missing father on the day of her detective agency's opening. The same day, Katrielle and her assistant Ernest Greeves meet a talking dog that, for reasons unknown, cannot be understood by anyone else but them. The dog explains that he has amnesia, and that he wishes for them to solve the mystery of who he really is, and Katrielle makes up the name "Sherl O.C Kholmes" for him.

Case 1: The Hand That Feeds[]

One of the hands of Big Ben has gone missing and Inspector Hastings calls upon Katrielle's aid to solve the case before an ambassador arrives. The hand went missing sometime between 11:50 the previous night at 6 that morning. DC Booker mentions recent thefts of metal and Hans Lipski, the clock tower serviceman, said the hand was firmly attached the previous day. A waiter says that cutlery was missing as well, but when Katrielle looks through the trash of the pâtisserie run by Hans' twin brother Aleks, she finds a blueprint that resemble the clock hand. She also learned that it had rained the previous night, this is when Katrielle realizes what had happened, the hand was actually a giant wafer! The Lipski brothers confessed that Hans accidentally dropped and broke the hand (the thefts were a red herring), so he worked with Aleks to make the wafer buy time, but then it rained. Katrielle gives them the idea to make another one for the ambassador, who was quite pleased.

Case 2: Murder on the Thames[]

London's "Riverside Festival", a special event where two lovers confess their love to each other on opposite sides of the River Thames, is underway. However, right before the last day of the event, Vic and Tim, two such lovers, meet an unnatural death right after confessing in a manner connected to the mysterious legend that started the event in the first place. One of the multi-millionaire Seven Dragons of London, Mayor Pipper Lowonida, has personally asked Inspector Hastings to investigate this manner. Katrielle asks around London and learns that the victims were theatre performers whom Emiliana Perfetti reveals that Lowonida, and that she used to be a party animal and became mayor solely to rejuvenate the festival. This makes Katrielle realize that the mayor set up the two to play out the legend for the festival to be a success.

Case 3: The Stolen Kiss[]

Ernest tells Katrielle and Sherl that he has won some tickets for a movie premiere in the nearby Saveloy theatre. Katrielle and Ernest decide to attend; but just as the movie is about to reach its climatic kiss scene, it turns out the scene has been stolen!

Case 4: Pet Pandemonium[]

Madame Gretchin Doublée asks for the help of Katrielle to find her pet Rex, who has seemingly disappeared.

Case 5: Ghost Busted[]

Katrielle is invited by Liza Wight to her residence to investigate on ghosts that appear to be haunting the mansion.

Case 6: An Unexpected Windfall[]

The Layman's Reserve bank, owned by Grant Sloanes, has been robbed of one hundred million worth of paper notes. They enlist the help of Katrielle to find out the culprit.

Case 7: Ratman Returns[]

Katrielle is asked by Taboras Lloyd, the chief editor of the London Times, to investigate the mysterious disappearance of Ratman, a local superhero.

Case 8: The Goddess of the Thames[]

As a thanks for their previous help, Katrielle, Ernest, and Sherl are all invited on a luxury cruise on the Thametanic. Once aboard, the owner of the ship, Mustafa Fullhold decides to entertain the guests with a treasure hunt around the ship where they have to find little statues of the Goddess of the Thames. But when the main prize, a fully sized golden statue worth millions, goes missing, Katrielle is tasked with finding it back.

Case 9: The Battle of Hastings[]

On Godwin's day, a local holiday, Katrielle is enjoying a day without work. Suddenly, Inspector Hastings enters the Detective Agency and tells Katrielle that it is his wife's birthday and that he forgot all about it, and begs Kat to help him find a suitable present despite every shop being closed.

Case 10: The Importance of Being Ernest[]

Sherl is having a talk with Ernest about why the latter is so willing to work for Katrielle despite not being paid. Ernest then tells him the story of when he once was accused of theft, and how Katrielle managed to prove his innocence.

Case 11: Katrielle Layton: WANTED![]

Katrielle is accused of murdering Clover Pryce and it is up to her to clear her name and catch the real killer.

Case 12: Diamonds Aren't Forever[]

Layton and the Seven Dragons are invited by the mysterious Lord Adamas to the abandoned mansion of Lord Maximilian Richmond, a millionaire who died 10 years before. In the occasion, Adamas forces the Seven Dragons to sign a contract where they relinquish all their fortunes to him should they fail to solve a series of puzzles, or he will reveal a grave secret about them. Attending the event at Layton's stead, Katrielle accepts Adamas' request to oversee the dispute. All of the Dragons fail to solve the puzzles and accept defeat, until Katrielle discovers that Lord Adamas is no other than Ernest, whose true identity is Miles Richmond, Maximilian's grandson, who grew up with the false assumption that the Dragons betrayed and ruined their family, swearing to enact revenge on them. After the misunderstanding is cleared, Ernest reconciles with the Dragons and accepts Katrielle's request to keep working as her assistant.

In the post-credits, Katrielle renews her vow to unlock the mystery of Sherl's true identity and discover the whereabouts of her father. Although she is no closer with the latter, she proclaims that she has solved the puzzle that her father left behind when he disappeared: "If you're not really my child, then who exactly are you?".


Spoilers end here

The Animated adaptation[]

In April 8, 2018 an animated TV series, Layton Mystery Detective Agency: Kat's Mystery-Solving Files, was premiered, comprised of 50 episodes in total.

The series is set slighty before, during and after the events of Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy, and as such, it not only tells its own original plot, but it also gives its own adaptation of the 12 cases of the game, with some differences, added details, and a reshuffled order compared to the game's version of the same events.

3DS eShop Description[]

Solving mysteries runs in the family! With Professor Layton's whereabouts unknown, it's time for his daughter Katrielle to take centre stage in Layton's Mystery Journey: Katrielle and the Millionaires' Conspiracy.

The story this time begins with Katrielle setting up the Layton Detective Agency on Chancer Lane, determined to prove her worth and hoping that the exposure will help her uncover clues regarding her missing father's whereabouts. Whizzing around London on her trusty bicycle, solving case after unlikely case, Katrielle will become embroiled in a quizzical quest that eventually leads to her unwitting discovery of the Millionaires' Conspiracy. However, she's not alone in her endeavours - a young Gressenheller student by the name of Ernest Greeves joins the agency as her assistant, and the team quickly grows to three when Sherl, a talking dog, becomes Katrielle's first client and subsequently a trusty sidekick.

With the most puzzles ever included in a Layton game, a colourful cast of new characters, a hatful of humorous dialogue and an intriguing new storyline, it's time to say hello to a new heroine and a new era for the Layton series! Will Katrielle and her friends ever be able to find her missing father?

Media[]

Main article: Gallery:Layton's Mystery Journey

Trivia[]

  • Akihiro Hino (LEVEL-5 CEO) stated in a Famitsu article that LEVEL-5's reason for creating a female protagonist was because more than half of all players of the Professor Layton series were female, and selected a female protagonist to appeal more to players[6].
    • Additionally, the reason for a new protagonist over Hershel Layton was because of an belief that the Layton series had strayed from its roots in recent previous entries, which featured "overblown" stories like saving the world, and a desire to bring the series back to its core principles. This resulted in going from Hershel to having his daughter as the protagonist, as the team felt that they can't "bring back a guy who's saved the world and have him go do things like find a missing cat".
  • The game contains a glitch where the play time will suddenly display "99 h 59 min" of play time. If the game is saved when the glitch occurs; the save screen will show the time as either "0:00" or completely blank.
    • In some cases, fully quitting the game and reloading the glitched save file will restore the proper time. Some people have also managed to restore their times by uploading it to the LEVEL-5 ID service and re-downloading it. It is unknown what causes this glitch to happen.
    • There was a second glitch exclusive to the Nintendo Switch version, where, no matter if you saved or not after purchasing the "Floral Finesse" outfit, quitting the game and reloading would always cause it to be removed from your inventory. This was patched later on, and the outfit was automatically placed in the player's possesion without needing to purchase it.
  • The 3DS version of the game does not have any 3D effects, unlike most 3DS games. Adjusting the 3D slider on the system has no effect.
  • This is the first Layton title to be released on the Nintendo Switch.
  • The second case, Murder on the Thames, shares a name with Annie Dretche's famous mystery novel.

External Links[]

Notes[]

  1. ^ Prices may differ according to region; even with the same currency.

References[]

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