As of July 2026, Moriarty the Patriot Season 1 aired in 2020 with 24 episodes — streaming now on Crunchyroll. Full episode guide and where to watch below.
Moriarty the Patriot Season 1 poster
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Moriarty the Patriot Season 1

2020 24 Episodes Animation · Mystery ⭐ 8/10

Moriarty the Patriot Season 1 has quietly become one of the more dependable crime dramas currently available on and . The show says what it needs to say in a single season, no filler. An 8/10 rating says what the writing already makes obvious: this one works. Soma Saito anchors it, but the writing does the real work. There is no real reason to keep putting it off.

Moriarty the Patriot Season 1 arrived without much fanfare and built its audience the hard way — through word of mouth. At its heart, Moriarty the Patriot Season 1 understands what makes crime drama work — character first, plot second. Season 1 of Moriarty the Patriot includes 24 episodes. It aired from October 2020 to June 2021. This season stars Soma Saito, Takuya Sato and Chiaki Kobayashi. Soma Saito and Takuya Sato lead a cast that brings real weight to the material. It was aired in 2020. What makes Moriarty the Patriot Season 1 hold up is that the resolution matters less than how the characters get there. The consistency throughout is what elevates it — not every moment is the best, but none of them are a reason to stop watching.

Viewers who think they have seen every crime drama tend to find Moriarty the Patriot Season 1 proves them wrong. It does not lean on comparisons to make its case. It is a manageable watch, easy to fit into a single week. Soma Saito's performance is the kind that shows up on best-of lists years later. If you have been looking for something to fill the gap left by a recently finished story, this is a reliable answer.

📡 Where to Watch Moriarty the Patriot Season 1

🇦🇺 Australia
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🇺🇸 United States
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🇬🇧 United Kingdom
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🇨🇦 Canada
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🇳🇿 New Zealand
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🎬 Moriarty the Patriot Season 1 — Episode Guide

E1
The Earl’s Crime
2020-10-11
A rash of abductions of young boys that end up brutally murdered is plaguing London, and police are powerless to stop it. When William Moriarty discovers a clue linking all the victims, he and his brothers take an interest in the case.
E2
The Scarlet Eyes, Act 1
2020-10-18
In 1866, a brilliant young orphan and his ailing younger brother are taken in by a charitable aid organization, where they catch the attention of the son of an earl, who is discontent with Britain’s class system.
E3
The Scarlet Eyes, Act 2
2020-10-25
Albert invites the brothers to come live at the Moriarty’s estate, but the pair are not warmly welcomed by the other members of the household. Albert grows increasingly disturbed by his family’s intolerance, and resorts to drastic measures.
E4
A Rare Breed
2020-11-01
William begins teaching at a university, and is invited to dinner at the home of the Viscount of Belfor. He and his brothers receive a tour of the viscount’s well-kept conservatory, but are taken aback by what they hear of the gardener and his wife.
E5
The Dancers on the Bridge
2020-11-08
William learns that Lucian, one of his students at Durhnam University, hasn’t returned for three days. What’s more, the waitress Lucian had vowed to love throws herself from a bridge and dies. However, one of the university’s administrator assures William there’s nothing to worry about, but William ...
E6
The “Noahtic”, Act 1
2020-11-15
A commoner is chased down by a hunter and his dogs before being shot. The ocean liner Noahtic begins its maiden voyage and Count Blitz Enders, an openly arrogant noble, heavily criticizes that commoners are allowed aboard. Days previously, William shared his plan to slowly remake society by plunging...
E7
The “Noahtic”, Act 2
2020-11-22
Moriarty pretends to believe Blitz’s lie that he killed Thomas in self-defense and offers to cover up the crime.
E8
A Study in “S”, Act 1
2020-11-29
Sherlock Holmes gets in trouble with his landlady Mrs. Hudson for not paying his rent. Holmes’ friend, Dr. Stamford, suggests Holmes get a flatmate and sends Dr. John Watson, whom Holmes deduces is a retired army doctor. Mrs. Hudson is impressed enough to allow Watson to become Holmes’ flatmate. Ins...
E9
A Study in “S”, Act 2
2020-12-06
Sherlock and John, searching for the true criminal who killed Count Drebber, set a trap for the criminal using the wedding ring they found at the murder scene. Sherlock is able to deduce who the real killer is, who offers Sherlock a strange deal.
E10
The Two Detectives, Act 1
2020-12-13
Sherlock is frustrated because he thinks there’s a mastermind behind the Noahtic and Drebber cases whose identity eludes him. Returning on a train after an unsatisfying investigation into another aristocrat’s death, he happens to meet William again.
E11
The Two Detectives, Act 2
2020-12-20
With 48 minutes remaining before the train reaches the next station, Sherlock declares that William and he can find the murderer in time. Sherlock relies on the evidence at the scene, while William pursues a psychological profile of the killer.
E12
A Scandal in the British Empire, Act 1
2021-04-04
Military Intelligence Service Director Mycroft orders Albert to recover classified papers that could rock the nation, and kill the woman who stole them. Sherlock is hired by the king of Bohemia to pursue Irene Adler, who threatens the king’s wedding plans.
E13
A Scandal in the British Empire, Act 2
2021-04-11
Following William’s plan, Albert invites Irene to a masquerade, where a game with the famed “Lord of Crime” as its theme is being played. Dressed as a man, Irene uses the game to contact Albert, pleading for her safety in return for the stolen papers.
E14
A Scandal in the British Empire, Act 3
2021-04-18
Despite Sherlock recognizing that Irene is dealing with the Lord of Crime, he sees her off. Irene negotiates with the Lord of Crime in an abandoned church, but before she can turn over the papers, Sherlock arrives, and makes a deal to keep Irene safe.
E15
The Phantom of Whitechapel, Act 1
2021-04-25
Receiving a new name, Bonde joins the Moriarty ranks, and is sent to retrieve the contents of a safe deposit box with Moran, Louis, and Fred. But when an unexpected bank heist spurs the others into spontaneous action, Bonde is left wondering what to do.
E16
The Phantom of Whitechapel, Act 2
2021-05-02
A series of murders is being carried out by someone claiming to be Jack the Ripper. In response, a vigilante group of the town's poor confronts Scotland Yard while William and the real Jack scramble to uncover the true culprit's aims and foil their plans.
E17
The Riot in New Scotland Yard
2021-05-09
A culprit is arrested in the Jack the Ripper case which was solved by the Moriartys. Suspecting a frame-up by Arterton, Lestrade asks Sherlock for help in finding evidence that would prove it. Meanwhile, Paterson works to sneak Bonde inside the station.
E18
The Merchant of London
2021-05-16
William outshined the adults in knowledge and nerve while saving the orphanage where he was staying. Judicial records state that William lent a nobleman £600 in the spirit of a certain play. But when the contract is broken, William takes drastic measures.
E19
The White Knight of London, Act 1
2021-05-23
Adam Whiteley, a young MP in the House of Commons working toward an equitable society, garners public support as a "White Knight." Milverton is hired by those opposed to Whiteley to oust him. William takes interest in Whiteley, and decides to test him.
E20
The White Knight of London, Act 2
2021-05-30
Whiteley goes alone to deal with the House of Lords with the irrefutable proof obtained from Albert in hand, but finds Milverton, the king of blackmailers. Even as Whiteley negotiates with him, Milverton's devilish clutches close in on his dear brother.

🎭 Cast of Moriarty the Patriot Season 1

Soma Saito
Soma Saito
William James Moriarty (voice)
Takuya Sato
Takuya Sato
Albert James Moriarty (voice)
Chiaki Kobayashi
Chiaki Kobayashi
Louis James Moriarty (voice)
Makoto Furukawa
Makoto Furukawa
Sherlock Holmes (voice)
Yuki Ono
Yuki Ono
John H. Watson (voice)
Satoshi Hino
Satoshi Hino
Sebastian Moran (voice)
Yuto Uemura
Yuto Uemura
Fred Porlock (voice)

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