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As you may have gathered by now,Ace Attorney Investigations: Miles Edgeworthis a game that doesn’t really care about being in chronological order. The fourth episode, Turnabout Reminiscence is named quite well - this case takes place far in the past, during Edgeworth’s training to be a prosecutor under the tutelage of Manfred von Karma.
Also getting some attention in this case are Franziska von Karma and Gumshoe, with this episode giving us a great insight into what their relationships with Edgeworth were like back in the day. Don’t worry, there’s also a grizzly mystery to solve, and we have all the solutions below.

Beginning: The Court House
As this case doesn’t begin with a murder or a mystery, we don’t technically begin with an official investigation to speak of. However, we do have some things we need to do to progress.
Begin byspeaking to Manfredto learn about today’s trial and its history. Checking out theKG-8 Incident Overview fileis a good idea when it’s added to your case files. The scenes that follow your conversations with Manfred will have you meeting Kay and then discovering the big tragedy of the episode.

When you regain control in the hallway,speak to everyone there- the detective with the long coat, the defence lawyer in blue, and good ol' Detective Gumshoe.
After the conversations, you’ll be ready to start the first proper investigation of the episode.

Investigation: Defendant Lobby No. 2
Begin this investigation byexamining the bodies. Examine the following points:
Examining everything will lead to another examination with the bodies moved. In this new scene, examine the following points:
With that done, you’re able to examine the rest of the room. Look at thetable on the bottom sideof the room, theopen windowat the back, and thebig televisionon the right.

This is all the evidence you need before you start makinglogical deductions.
Ink stain

+
Fountain pen in pocket

Neat and tidy table
Plastic bags strewn about

Making these combinations will prompt you to make a deduction with the bodies to point out a contradiction.Deduce the gunin Faraday’s hand and presentMr. Faraday’s Fountain Penas evidence of a contradiction. This will end the investigation and lead directly to a confrontation with Franziska.
Cross-Examination: What Happened
Cross-Examination: What Happened, Pt. 2
In the ensuing scenes, ask Gumshoe about thepossible motive for the murders. This gives you the next cross-examination.
Cross-Examination: Gumshoe’s Motive
Cross-Examination: Motive To Kill The Men
After the ensuing scenes, you’ll gain control again.Talk to Calisto Yew about the KG-8 Incidentand thenpresent her with the KG-8 Incident Overviewto unlock somemore dialogue options- you must do this in this specific order. When asked, state that she isconnected to the incident through the victim.
After the break and the scenes with Manfred,talk to Yew and Gumshoeabout every option they have. You’ll need to talk toYew firstbefore Gumshoe will calm down enough to chat. After exhaustingGumshoe’sdialogue options,present him with Det. Gumshoe’s Testimony to proceed.

After the short cutscene,follow a young Kay Faraday into the hallway to the left. This starts the next stage of the episode.
Investigation: Hallway
Begin this investigation bytalking to the Judge and then Detective Baddabout every option they have. When prompted to ask more about the gunshot with Badd, ask about thetime he heard it.
With the conversations over, it’s time to investigate. Take a look at the following:

Swiss roll crumbs
Vending machine

Pink piece of trash
Windowsill cactus
After the discussion,return to the vending machineand hit the Deduce button over theSwiss Rollspanel and present theAnnual Bonus Envelopeas evidence of a contradiction.
With that, the investigation is complete, and it’s time to confront a major character.
Cross-Examination: What I Saw At Recess, Pt. 2
Cross-Examination: While I Was On Duty
This will end the cross-examination and give you a chance to chat withKay. Talk to her about every option you getafter presenting her with the Swiss Roll. Then, to prove that Gumshoe was lying,present the Promise Notebook.
After a few scenes, you’ll regain control in Defendant Lobby No. 1.Talk to Badd about everything here. This series of events will lead you back to the courtroom. Examine theevidence on the benches to the left, taking a closer look at each individual piece when prompted.
When asked to show evidence of how the knife was brought into the courthouse, present theYatagarasu’s Key. Examine thebutton on the bottom of the knifewhen taking a closer look at it.
The following scenes will have you confronting Detective Badd.Talk to himandpresent him with the Yatagarasu’s Keybefore asking about the time of the murder. This will begin a cross-examination.
Lobby No. 2 window
Dissipating the smell
Very loud television
Open windows
Gunshot could be heard
Missing evidence
This will put you into a special, short investigation.
Examine the video playerunderneath the television screen, and thenDeduce the open window and use the Surveillance Video as evidence.
State that the killer wanted to manipulate the perception of when the crime took place to complete the investigation. This will take you to the final stretch, which consists of a few complex cross-examinations.
Cross-Examination: Ms. Yew’s Rebuttal
Cross-Examination: Why It Couldn’t Be Me
This ends the cross-examinations and the case. The final prompt you’re given is to provide proof of Kay’s friendship; this is, of course, theSwiss Roll.