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Tobias Gregson
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Tobias Gregson was a Scotland Yard detective working in London during Ryunosuke Naruhodo's time in England. Due to his role in the Professor case, Gregson became known as a legendary detective. However, he began to take cases on alone, secretly.

Working for Stronghart[]

Main article: The Professor Killings

Tobias Gregson helped Mael Stronghart frame Genshin Asogi for being the Professor (to which he opposed at first, until realizing the consequences if the truth were to become known to the public). He collected a group of thugs together and attacked Asogi, stealing his trademark ring. Second, Gregson, with Stronghart's help, would argue for Klimt van Zieks' autopsy report, which would not normally be done to a noble in the House of Lords.

After that, he helped Stronghart bring a curse on Barok. Gregson would investigate defendants who went free and come up with the best ways for Britain's notorious assassin, Ann Sasha, to eliminate them.

Tobias Gregson found Everyday Mittlemont pretending to be a street vendor named "Hugh Boone" and began to use him by giving him his police ID and asking that he make a scene where he was directed to go to by proclaiming that the detective is here to investigate. In exchange, Gregson paid Mittlemont a lot of money, which allowed him to continue his ruse, this was all for Gregson to better hide his movements.

Mael Stronghart decided Tobias Gregson knew too much about Klimt's autopsy and Stronghart's past, so to eliminate Gregson, he had Genshin's son, Kazuma, kill him. Since Japan and England recently made a treaty, Stronghart knew if Kazuma was fully exposed of killing Gregson, England would have difficulty arresting the young Japanese man. Unfortunately, Stronghart's plan went wrong as Kazuma was knocked out by Nikolina Pavlova, sparing Gregson for some time.

Meeting Naruhodo[]

Main article: The Adventure of the Clouded Kokoro

Detective Gregson first appears to Ryunosuke Naruhodo and Susato Mikotoba after they have won their first trial in London. He reveals why Barok van Zieks is called the Grim Reaper and invites them to meet their new client, Soseki Natsume. At the crime scene on Briar Road, Gregson gives the two a map of the the road. He considers one of the witnesses as the most reliable in London due being a policeman. He doesn't believe Natsume isn't a criminal capable of capital punishment and he loathes Herlock Sholmes for taking his case and calls his stories mockeries. Later, he receives a card with five shillings from Iris Wilson. He became excited that he is gonna be put in her stories.

Tobias is the first witness to take the stand, he explains the case. He says it the visibility on the site was good despite being foggy. Soseki Natsume and the assault victim were the only ones there. When Natsume fled, he dropped his books he got from the secondhand bookstore. By finding out who owned those books, Scotland Yard arrested Natsume. Gregson adds a photograph of the victim stabbed on Briar Road. But Naruhodo reveals that a receipt found in Natsume's flat says he bought the books at a bookstore named Ragged Books. Ragged Books is just a few rows of units from Bourbon Books, but it's so small Scotland Yard didn't think Natsume would buy books from there. Eventually, Natsume's landlady was revealed to be the accidental culprit.

Second meeting[]

Main article: The Memoirs of the Clouded Kokoro

The next day, he investigates the attempted murder of William Shamspeare, Natsume's lodger. When Naruhodo and Sholmes arrived, they deduced that Natsume would be most likely culprit, so Gregson took him to Scotland Yard. When he returned to the boarding house, he told Naruhodo and Susato that the crime scene would be cordoned off in five minutes. When Shamspeare momentarily recovered, Gregson helped complete the line that Shamspeare started to quote. Later, he informed Natsume in the Gaol that Shamspeare was suing him despite making a full recovery.

In court, Tobias Gregson took the stand with Natsume, the inspector explained the case then submitted a photo of Shamspeare unconscious as evidence. During the testimony, he explained the poison that Shamspeare ingested would only reacted within half an hour.

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Third meeting[]

Main article: The Adventure of the Unspeakable Story

Tobias Gregson receives a telegram from Hatch Windibank to come to his pawn shop regarding a circuit. When he arrives he sees a young man pointing a gun, he confiscates his coat and disc for Scotland Yard despite the protests of Gina Lestrade. Gregson mentions an incident but refuses to talk about it. Eventually, the detective gives Lestrade back the coat and Sholmes reveals that he actually gave Gregson a caramel mold of the disc.

Later, when Hatch Windiback was murdered, Tobias Gregson investigates the shop with the police. Gregson mistakes Iris Wilson as being another witness, hired the best doctor in London to work on Sholmes when she shot at the crime scene. Iris gives him some tea and Gregson says this case is simple with conclusive evidence. Naruhodo asks why Gregson acts so different around Iris compared to him, he says it's because she has him as a character in "The Adventures of Herlock Sholmes". Sholmes said Gregson was the smartest in Scotland Yard, but the inspector is jealous of Sholmes' character in the novels compared to him. Gregson relays a message to Naruhodo saying Susato went to the High Court of Justice so Naruhodo and Iris decide to go there.

Later, Tobias Gregson gets the written request of the defendant, Gina Lestrade, and some more of Iris' tea. He leaves to continue the investigation allowing the three to check the storage vault.

Faced with a return[]

Main article: The Return of the Great Departed Soul

Tobias Gregson, being allowed back on the job again, took Gina Lestrade under his wing to become an inspector.

Death, confusion, and resolve[]

Main article: Twisted Karma and His Last Bow and The Resolve of Ryunosuke Naruhodo

While Gregson sent Mittlemont out to be a decoy with the "Red-Headed League", a small-time scam of Maurice de Quilco and Marco di Gicho, he was given a "Death Bringer” mission for October thirty-first aboard the S.S. Balabrock as it head for France. The target was Seishirou Jigoku, who was put on trial ten years ago when he made insulting remarks while trying to save Genshin Asogi. Since Ann Sasha was killed, the assassin that would go with him was Kazuma Asogi. Before he left his secret room to go there, he spoke fondly of Lestrade, and left her his "detective spirit".

While in Seishirou Jigoku's cabin on board Balabrock, Gregson learns that Kazuma is Genshin's son. He tells him that he believes that his father was the Professor even now but didn't have enough evidence to prove it back then, he said he just worked as the mission instructed for the British Empire. But Gregson refused to say exactly what he did, even if it meant his death. This caused Kazuma to furiously draw his sword and attack the detective, he missed but his sword got chipped on Jigoku's trunk in the process. Then he decided to leave at that, disembarking in Dunkirk, France to stay the night, Gregson decided to kill Jigoku all by himself. But Jigoku didn't know Kazuma Asogi was alive and had already decided to kill Gregson on his own to complete the assassination exchange program, this "Death Bringer" mission was a fake asked by Jigoku himself. When Jigoku returned to his room, he found Gregson there. He choked Gregson, knocking him unconscious before he could shoot him. As first class cabins are surrounded by guards, Jigoku decided to wait until the emergency drill later that evening to strangle him to death. Unfortunately, just as that time arrived, Gregson woke up and started attacking Jigoku in a frenzy. In a moment of panic, Jigoku used the gun the English government had given him in the exchange program sixteen years ago and shot Tobias Gregson, killing him instantly.

He took Gregson's coat off and hid his body in the freezer, trying to buy some time and fake Gregson's time of death, there was no chance to throw the body overboard due to all the guards. He then put Gregson's body in his own suitcase and took him off the boat and to the hotel. But he didn't notice the fish and chips falling out of Gregson coat, they grew mold as of hot temperature of exposure in the cabin.

Tobias Gregson's death.

He had heard about Gregson's Fresno Street apartment with Everyday Mittlemont from Hart Vortex, and went to drop the body off there. He set up some firecrackers he bought from "Venus" and used the candles as a makeshift timer that would go off around the time the body warmed up. That way, when Mittlemont came to visit, he could be framed. Unfortunately, Barok van Zieks showed up on his investigation of detective Gregson and he took the fall when "Venus", "Sandwich", and Mittlemont arrived instead. Maria Goulloyne performed the autopsy on him and she realized the body was tampered with after discovering the moldy food.



Tobias Gregson was a hard working detective who took pride in the Scotland Yard's name. As for being a devoted worker, he despised criminals and lawbreakers. Whenever he met with Ryunosuke Naruhodo and his co., he spoke in distaste for the foreign attorney, but overall treated him as a citizen respectfully. However, because Naruhodo is foreign (or an attorney), he did not go out of his way to help them with an investigation with the exception of Iris Wilson's presence. He was very strong willed in doing whatever necessary to ensure Great Britain's stability, going as far as to forge evidence to indict Genshin as the "Professor". To this end he was willing to take that secret to the grave, even when his life was threatened by Kazuma.

Although he was tough on crime, he was shown to be compassionate to Gina Lestrade, a street pickpocket who had also committed perjury, by taking her under his wing and training her as an inspector. He comforted her at times by telling her the "Death Bringer" only goes after the "bad guys". After his passing, his letter to Gina stated that he hoped that she had inherited his detective spirit and that she would take care of London for him (since he was not returning to London on his "trip").

His favorite food is fish and chips which he is almost never seen without. He also carries a pocket watch around, it was memorial present for solving the Professor's killings, he had a habit of winding it every day. Whenever the crown gets broken, he uses a special key disguised as a policeman figurine to wind it instead.


Tobias Gregson is The Great Ace Attorney: Adventures's version of the Inspector Gregson from the Sherlock Holmes canon.


  • Tobias Gregson is one of two characters in the Ace Attorney franchise to die in a game that is not their debut appearance, the other being Jezaille Brett. Both were introduced in The Great Ace Attorney: Adventures and died in its sequel.
  • Tobias Gregson is the only deceased character to appear in the closing credits, excluding the epilogue which takes place after the credits.