In the cutscene, you can see Trucy being chased by a dragon, apparently named Mr. Reus, and she traps the dragon with a hat. You might mistake her as in "Alice in Wonderland". You can see her blue dress and the blonde wig in her dressing room.
Stage
Apollo and Athena are watching the Magic Show, and seem to really be enjoying it. The show goes into intermission before the next act. They decide to go to the dressing room to visit Trucy during this time.
Dressing Room
In the dressing room, Trucy signs a contract with a staff member. Her magic show will become a two day TV special! Apollo and Athena congratulate her and motivate her for the second act of her show. Bonnie arrives to inform Trucy of preparations to start the next act and Apollo and Athena head back to the stage.
Stage
As the second act goes on, Trucy's magic demonstration cuts short as the body of Mr. Reus falls out of a stage coffin. Bonnie and Trucy ran away with the dragon cutout falling from its tether.
Penrose Theater
People were shocked at this event and a man you run into introduces himself as Mr. Retinz. He is "the man behind it all" and seems to be desperate to enter the theater.
Move to Wright Anything Agency.
Wright Anything Agency
Apollo and Athena wonder what Wright is up to. The news broadcast discusses Wright's success in Khura'in and report the events that transpired at Trucy's show. The case is described as an involuntary manslaughter. But it gets worse: Trucy has been arrested for murder!
Move to the Detention Center.
Detention Center
Talk to Trucy:
The Incident: The coffin was supposed to be empty when Trucy stabbed it - why was Mr. Reus in there? And what caused the dragon to come down?
The Magic Trick: Trucy reveals the secret behind her trick. She hid under the floorboards waiting for her moment to shine. Stage diagram is added to court record.
The Great Mr. Reus: Mr. Reus used to be a member of Troupe Grammarye, but left after an injury 13 years ago. Trucy seems to be hiding something, though.
BRACELET
Pan the camera to her eyes - they look to the side when she says she's "fine". Present your Attorney's Badge.
Talk to Trucy:
The Truth: Trucy's not entirely sure she isn't to blame. She could have sworn she'd switched the sword for the rubber copy, but with Mr. Reus dead as a result of her mistake she begins to doubt herself. Also, this is the first time you see her cry as you console her and decide to defend her against the charges laid on her. Of course as a comic relief, Athena is crying too.
As the police take her away for further questioning, she asks Apollo to grab a black notebook from the bag in her dressing room for her.
Move to Penrose theater.
Penrose Theater
Ema Skye makes her appearance, now a fully fledged forensic investigator. She informs you that Trucy's case is now being treated as a homicide rather than involuntary manslaughter as the prosecution has found evidence to prove so.
Talk to Ema.
The Incident: There is evidence to prove Trucy murdered Reus in the hands of the prosecution, however Ema doesn't know what it is. In addition, the prosecutor is from the kingdom of Khura'in, as the prosecution office had a shortage and was willing to take just about anyone.
Ema: Ema discusses her path to becoming a forensic investigator. Even though she was absent in "Dual Destinies", you probably remember her in two games "Phoenix Wright Ace Attorney" and "Apollo Justice Ace Attorney". Play those two to learn more about her character.
The Prosecution: The prosecutor facing Apollo tomorrow is known as Nahyuta Sadmadhi.
Ema will grant you access to the crime scene at the stage.
Move to the dressing room.
Dressing Room
Examine the bag on the far right of the screen. Trucy's notebook isn't where she said she'd left it. Examine the blue book in the center of the screen. Show Script is added to the court record. Examine the posters on the far left of the screen. Thirteen-Year-Old Poster is added to the court record. Lastly, examine the table on the left below the posters to add Trucy's Notebook to the court record.
Move to the stage.
Stage
After a conversation with Ema, examine each part that would be ticked. Most notable is the camera on the right at the start for the TV footage. Then move around to reach the coffin area. Examine the sword. It appears to be the murder weapon since it's covered in blood. Ema says no fingerprints were found on it. Apollo believes that someone switched the the rubber sword with the metal sword. When Apollo asks himself when the culprit could've done this, select the second option. Move to the coffin area again, and examine the coffin. Ema asks you to examine it, since she hasn't done it herself. When taking a closer look, examine the body outline. Ema gives you a photo of what seems to be a dead Mr. Reus. It looks like he was stabbed in the back. Crime Photo added to the court record. Next, examine the bottom of the coffin. The bottom of the coffin opens up to the understage passage. Examine the back of the coffin. There's a secret door there.
Afterwards, Ema teaches you how to dust for fingerprints. Once you've finished dusting the fingerprint, choose Mr. Reus to analyze it with. When done, move to the opposite side of the coffin and being dusting there. Those prints also belong to Mr. Reus. Now, you being dusting the outside of the coffin. Begin near the top, left side of the lid. Choose Bonny de Famme to analyze it with. Afterwards, begin dusting at the top of the coffin, on the right-hand side. However, the prints don't match with anyone. Apollo notices that Mr. Reus's fingerprints are positioned oddly. Looking at his prints, makes it seem like he was facing backwards. The theory is that he tried to avoid the sword at first, but ended up getting stabbed in the back. Fingerprinting Results added to the court record. Ema then lifts up the curtains.
Examine the backstage area. Examine the red bucket. It seems to be a fire bucket that Mr. Reus bought when he found out about the fire trick he was going to perform. However, the inside is lined with dust. Fire Bucket added to the court record. Examine the winch. They were used to hold up "a weird puppet" and the dragon set piece. Examine the coffin, guillotine, and the understage sign. The entrance to the understage passage however is locked. Examine the ladder, which brings you to the catwalk. Examine everything that can be examined. The so-called "weird puppet" turns out to be Mr. Hat. His cape looks like it was slashed with a blade for some reason. When you climb back down, Apollo discusses what he learned and what could've happened. But then, a man appears out of nowhere. Examine the man. It turns out, he's the same man you've met before: Roger Retinz!
Talk to Roger Retinz.
Roger Retinz: Apparently, Roger was the producer for the filming of this show.
Magicians: Roger thinks magicians are a bunch of good-for-nothings. He called the Gramaryes, criminals, and also accused Trucy of killing Mr. Reus. It seems he has a grudge against Troupe Gramarye. He also has an alibi, since he was at the TV Studio.