Netflix's brand new twist on Sherlock Holmes and Doctor Watson - The Irregulars - landed on viewers' screens last week and it seems it has gone down a treat.
MORE: Netflix's supernatural Sherlock Holmes drama The Irregulars - get all the details
Not only has the gripping plot and stellar cast got fans talking, but one aspect of the show seems to be a particularly hot topic.
Taking to social media, plenty of fans have been commenting on actor Harrison Osterfield, who plays the part of Leopold, and his striking resemblance to a "young James McAvoy".
WATCH: The Irregulars on Netflix - officail trailer
One person shared a series of images of the character from the series, writing: "You're telling me this boy isn't related to James Mcavoy?? because?? #TheIrregulars."
A second fan agreed with the sentiment, writing: "This is exactly what I thought when I saw his character in episode one. Dude could be McAvoy's younger brother. Or son."
Meanwhile, another viewer said: "Is it me or does Leopold in #TheIrregulars have a look of a young blond James McAvoy about him?", as a fourth wrote: "Harrison Osterfield is just a young James McAvoy. I can't unsee it #TheIrregulars."
MORE: Ricky Whittle breaks his silence after American Gods cancelled – and fans react
MORE: Unforgotten to return for season five after shocking finale
Fans are convinced Harrison Osterfield (far right) is the spitting image of James McAvoy
For those unaware, the show focuses on a group of teenagers who work alongside Doctor Watson and Sherlock Holmes to solve crimes. The show's star-studded line-up, including Henry Lloyd-Hughes as the mysterious Sherlock while Line of Duty star Royce Pierreson plays Doctor Watson.
MORE: What will Bridgerton season two be about? We have the details...
The new show has gone down a hit with viewers
Other stars who make an appearance include Thaddea Graham, Darci Shaw, Jojo Macari and Ansu Kabia. The official synopsis reads: "Set in Victorian London, the series follows a gang of troubled street teens who are manipulated into solving crimes for the sinister Doctor Watson and his mysterious business partner, the elusive Sherlock Holmes.
"As the crimes take on a horrifying supernatural edge and a dark power emerges, it'll be up to the Irregulars to come together to save not only London but the entire world."
Like this story? Sign up to our newsletter to get other stories like this delivered straight to your inbox.