Plot hole: After the scene at the Houses of Parliament where Irene Adler escapes through the sewer from the clutches of Lord Blackwood, she suddenly appears at Tower Bridge, about 3 miles away. Even assuming she ran there and the journey was skipped, going there makes zero sense. It slows her down, leaves her exposed and limits her exit points - she's got all of London to escape into! (01:48:00)
Sherlock Holmes (2009)
1 plot hole
Directed by: Guy Ritchie
Starring: Robert Downey Jr., Jude Law, Rachel McAdams, Mark Strong, Eddie Marsan
Continuity mistake: At the graveyard scene, when Holmes borrows Lestrade's pen you can see that he has unbuttoned cuffs, and a pair of cuffs underneath. When he takes off his hat and scratches his head in the very next frame, he has just bare skin under his unbuttoned cuffs.
Irene Adler: Why are you always so suspicious?
Sherlock Holmes: Should I answer chronologically or alphabetically?
Trivia: During the film Holmes and Watson are analyzing a pocket watch as a key piece of evidence. Their observations of the watch being scratched by a frequently drunken man's hand, and it being engraved by numerous local pawn shops is paraphrased from the classic Sherlock Holmes novel: The Sign of Four.