His Last Vow - S3-E4

Factual error: Sherlock takes pains to explain in detail that he will deliberately corrupt the magnetic code stripe on an access control card he intends to use to enter the elevator to the villain's penthouse, by carrying it next to an operational cell phone. (This is possible due to the low frequency magnetic field from a phone's vibration motor.) But when he actually goes to access the elevator, he simply touches his access card to the reader instead of swiping or inserting the card through a slot, which is how a magnetic stripe reader would operate. The elevator uses an RFID proximity reader, not a magnetic stripe reader - a phone wouldn't corrupt an embedded RFID tag.


The Hounds of Baskerville - S2-E2

Factual error: Sherlock finds a photo of Major Barrymore's father and says he's wearing the Distinguished Service Order. The ribbon is not that of the DSO.


The Sign of Three - S3-E3

Factual error: In "The Bloody Guardsman" case, Bainbridge, who is in the Welsh Guards, is referred to by everyone, including himself, as "Private Bainbridge." The Foot Guards use the rank of Guardsman instead of Private.


The Great Game - S1-E3

Factual error: In a couple of scenes with the mobile phone when Sherlock is talking to the girl and she hangs up, the soundtrack has a audible "dial tone" inserted. Mobile phones don't have dial tones.

Many Happy Returns - S3-E1

Factual error: A jury in Hamburg is asked if Mr Troppoff is guilty. There are no juries at all in the German court system.

The Sign of Three - S3-E3

Factual error: In "The Bloody Guardsman" case, the guardsmen are on sentry duty unarmed. Sentries always carry rifles.


The Empty Hearse - S3-E2

Factual error: The entire reason Sherlock takes up the case is because he is intrigued how a man managed to disappear from a tube carriage in between stations - it appears to be impossible to do. However, any Londoner will tell you that it is perfectly simple to do: all tube carriages have doors between them linking them. So if the man wanted to leave the carriage between stations, he'd just use the door at the end of the carriage. The train employee would not be puzzled by this, nor would Sherlock consider the case worthy of his time.

Sherlock mistake picture

The Blind Banker - S1-E2

Continuity mistake: When Sherlock is backstage at the circus and finds the yellow spray paint, he draws a line on the mirror. In the next shot, the line he drew is completely different (and in fact is more of a squiggle). (01:07:40)

More mistakes in Sherlock

A Scandal in Belgravia - S2-E1

Sherlock Holmes: Punch me in the face.
John Watson: Punch you?
Sherlock Holmes: Yes, punch me in the face. Didn't you hear me?
John Watson: I always hear "punch me in the face" when you're speaking, but it's usually subtext.

More quotes from Sherlock

Season 3 generally

Trivia: Sherlock's parents are played by Benedict Cumberbatch's real-life parents, Wanda Ventham and Timothy Carlton.

More trivia for Sherlock

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