"Christmas boxes. Watson, I'm beginning to see the plan. Dr. Tobel divided his bombsight into four parts just as we br…"

"The four sections of your bomb sight fit inside these ponderous tomes; although, I must confess I shy to the thought …"

"Brilliant man, Sherlock Holmes. Too bad he was honest."

"[as Moriarty drains Holmes's blood] Drop by drop, Holmes. Drop by drop. Ah, in a way I'm almost sorry. You were a sti…"

"Basil Rathbone — Sherlock Holmes"

"Nigel Bruce — Doctor Watson"

"Lionel Atwill — Professor Moriarty"

"William Post Jr. — Dr Franz Tobel"

"Dennis Hoey — Inspector Lestrade"

"Holmes Herbert — Sir Reginald Bailey"