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Genshin Impactis a game with a strong focus on narrative aspects. Every major update will usually introduce a new development to the game’s main storyline. Arriving in the Hydro Archon’s nation in the 4.0 patch marked the beginning of the game’s fourth Chapter: Fontaine.
You will take on the role of the Traveler to help a nation solve its biggest crisis once more. You will make new friends and face off against new foes, all while you try to discover clues on the whereabouts of your sibling; the true purpose of your journey. Lies Cast Shadows Under Gathered Lights is the third sub-quest in Chapter IV: Act I.

This walkthrough contains story spoilers.
How To Begin Lies Cast Shadows Under Gathered Lights
Since thissub-quest is a part of the Archon Quest Act, the conditions for triggering it are quite simple. You will just need tofollow along the former sub-quest, The City of Rains and Remembrance, which will conclude once youenter the Opera Epiclese and find the seatsLyney has reserved for you and Paimon.
There is a long sequence of dialogue and a few cutscenesbetween the end of The City of Rains and Remembrance and the start of Lies Cast Shadows Under Gathered Lights,which corresponds to watching Lyney’s performance.

As Lyney’s performancecomes to a jaw-dropping end,the quest will begin.
Look For Clues Inside The Opera House
You and Paimon are now officially responsible forserving as the Attorneys for Lyney in a trialfor an abduction and murder case.
The Opera Epiclese has been cordoned offand no one is allowed in or out. As the Gardes conduct an investigation,you will be tasked with conducting your own investigationto collect clues that will help youbuild a case for Lyneyagainst none other than Lady Furina herself.

There are three major clues to find during this partfor the quest to move forth. However,your investigation notes will indicate a handful of undiscovered cluesinstead of just threeas the quest objective does.
You will not finish finding every clue in the investigation notesuntil you’re well into the trial itself, so don’t worry too much aboutthe empty spots.

This part of the quest hasa special mechanic that will replace your elemental skill. Activating it will trigger a marker witha large AoE that will resonate with the locationsof different points of interest andshow them on screen for a few seconds.
Interacting with some of these points of interestwill uncover clues for your notes, while others will merelyprovide some insight through dialoguebut will be unremarkable otherwise.

Talk to every member of the Gardespresent in the area,the audience member who is standing by the stairstheorizing about the occurrences, andeven Lyney and Lynette to exhaust all information sources. You should alsoobserve everything you canin the crime scene to continue. Then, you canhead to the lobby.
Stepping outside will immediately trigger a dialogue scene withNavia, the boss of Spina di Rosula. She and her assistants are also interested in discovering what happened during Lyney’s performance, so she willsuggest you join forces to investigateas partners.

This meeting is not optionaland will happen before you caninteract with the Gardes at the doorto obtain the last clue thatwill let you proceed. Navia will help youfigure some clues out later on.
Ask Lyney How He’s Doing On His End
Head back inside and talk to Lyneyonce you have collected all the important clues. He will guide your groupto the Audience-Side Magic Box,where he willreveal how the trickleading up to the murderwas supposed to work. He does not know what could have gone wrong.
This interaction willlet you collect three new clues for your notes.

Search The Underground Passage For Clues
Still under Lyney’s direction,your group will access an underground areawithprops, a cart, and some rails. This area holdsthe ‘magic’ behind the magic trick. Besides this, there aremore clues to be found. Investigate all points of interest toobtain four new clues for your notes.
Then, climb back up. Navia willsuggest you take a snack break to brainstormsome plausible theories. Your discussion won’t yield much, save fora suspicious situation where Paimon gets accusedof eating someone else’s snacks,and one clue for your notes.

At this point,there is nothing else you can find or collect. You will have to make do with what you’ve found, despite theempty spaces in your notes.
Participate In The Trial
The trial will begin at 8:00(in game time), so you can either wait around oruse the clock in the Paimon menuto time-skip. Headtowards the front of the audience standsat the appointed time to begin.
Most of the trialwill proceed in the form ofa long cut-scene.

The defense and the prosecution willeach make their own cases. At this point in the trial,LadyFurinawill have the upper hand as she will catch Lyney off guardwith a detail he was unaware of;the thud that was heard during the performance.
was information you and Paimon were privy to, asyou were in the audience when it happened. At this point, it becomes clearLyney is hiding something.

Then, Lady Furina drives her point forward byrevealing thatLyneyandLynetteare Fatuifrom the House of the Hearth, which is under the Knave’s direction.After learning about this, you request that the trial is adjournedbecause you need to speak with Lyney further.
You will leave the hall and discuss everythingLyney has been keeping a secret from you up to that point,including two new key pieces of evidencethat will help you turn the trial around.You will add them to your notes.
Continue Taking Part In The Trial
Once the trial reconvenes, Furina will present a reconstruction of events that, she claims,retells the entire incident from Lyney’s perspective. This will be told to youin the form of a comic, which also dubs asa mini-game of sorts.
You will have to payattention to the detailsof her reconstruction, as you will need topresent specific evidence from a listof possible arguments in the right order tosuccessfully refute her claims.
The list of argumentscomes from the clues you havecollected throughout the investigation.
First Solution
This will result ina successful refutation, which will put you back on track to prove Lyney’s innocence.
You will alsoconfront Furina about the inaccuracy of her claim, which will prompt a screen showing your investigation notes to emerge. You will need toselect the correct cluefrom the entire list to make your case. This clue isStrange Sound During the Magic Show.
You willexpose her argument’s flaw, and she will ask you to shed light on the real culprit.
This will prompta new mini-gamethat is a littledifferent from the last.
In this new section, you need toreview the case questions by selecting the corresponding gear, and choosing a piece ofevidence from your notes that can serve as the answer.
Second Solution
The first Logic Chainwill only present youone choice per questionup until you reach the last question: “Who was the only person who could possibly have committed the crime?”
Youroptions for this will be Cowell, Halsey, and the possibility of a third person.
Theright answer is Cowell, as he was the only one who could have possiblyhad access to the equipment.
Third Solution
This puzzle consists of another Logic Chain. It will be a rough reconstruction of events from what you assume is Cowell’s perspective with him as the criminal now. The answers are as follows:
However, this will prompt you todiscuss everything with your companions, and you will consider a new angle. You will beprompted to try again, and each option willonly have the correct answer for you to submit up until the last option, wherethe water vase will now appearas an option you can select.This will be the correct choice.
This new development in the trial will grant thelast clue you need to complete your notes.
Fourth Solution
It is time to reconstruct the events in a Logic Chain once more:
Your hypothesiswill be correct,and the trial will continue.
A breakthrough from the Gardes willlink Lyney as an accomplice in the crime once again. This time, Furina willpresent a reconstruction of eventsthat you seem to beunable to refute by your means, as you have used upall your evidence.
Just when all seems lost, Navia will make an appearance and start going on about how a newmagic trick will solve the case once and for all. She has found Halsey, whoturns out to be an impostor, and the real murderer. This willbring you to the last puzzleof the quest.
Fifth Solution
Your task is torefute Furina’s reconstruction again, this time using your evidence toretell the facts from the perspective of “Halsey.”
With thissuccessful refutation, all that is left is toenjoy the resolution of the caseas well as the lastfew surprises this Archon Quest Acthas in store for you.
How To Find All Collectible Clues
There are sixteen overall cluesin this quest that you willfind and note down in the investigation notes. Most of them will play afundamental part during the trial. You will find some of themthrough your own investigation, while some of them you willdeduct along the way.
The trial will also reveal a fewfinal pieces of information that will beinstrumental to cracking the mystery.
Investigate the point of interest next to the shattered box.
Information About the Missing Lady’s Identity
Talk to Maurice, a member of the Gardes standing by a door on the stage’s right side.
Random Number Selector
Talk to Vaughn and Quentin, two members of the Gardes standing at the other end of the stage.
Strange Sound During the Magic Show
Talk to Esildor, a member of the audience who is standing by the Opera stairs.
Entrances and Exits to the Opera House
Talk to Tristane in the lobby area. She is the Melusine watching over the Opera’s door, also a member of the Gardes.
The Magic Trick
Talk to Lyney and have him explain the Magic Trick to you and Navia.
Onstage Magic Box Structure
Audience-Side Magic Box Structure
Investigate the vent in the underground passage.
Probability of Third Person Being Involved
Have a snack break with Navia and you will obtain this clue once it’s over.
Lyney’s Statement
Talk to Lyney after requesting the trial be adjourned to reconvene.
The Voice in the Oratrice Core Chamber
“Water From the Primordial Sea”
Confront the possibility that Cowell was the culprit during the case, and wonder where in the world Halsey could have gone to.