On the Scent - S7-E9
Continuity mistake: Sherlock and Marcus visit a suspect's house. There are a bunch of cell phones on a console. One is gold with the name "'Mandy" on it. In a wide angle shot the gold phone is by itself next to some other black phones. Next closeup shot you see the gold phone is on a different position behind some other phones, and a green phone is added to the bunch. (00:18:40)
Chosen answer: M broke into the brownstone and left a note. Holmes deduced he was staying at a high-class hotel from the soap scent on the note, and gave a picture from a hidden camera to his "irregulars" on the street to stake out hotels. One of them saw him, so Holmes followed him to his next intended victim and knocked him unconscious with a baton.
Sierra1 ★