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.
Factual error: Some information about glycerol is displayed. The information is correct except for the structure of glycerol, which does not match the other information. Included in the information are "1,2,3-triol" and "3 hydroxyl (OH) functional groups." Both of these bits of information indicate that the molecule has 3 (OH) groups; however, only two are shown in the structure (conveniently coloured red). The red "OE" should also be an OH. (There are additional errors in naming, which are excusable here.) (00:00:37)
Chosen answer: That line of dialogue has never actually been spoken in any of the Sherlock episodes, during seasons 1-4. However, that line is written in someone's fan-fiction story online, where it's said by Sherlock and directed at Anderson.
Super Grover ★