They couldn't knock him out, so they tried to tear him down.
SCIENCE TRAPS A KILLER!
«MUST CONFESS. HONORABLE SON...This Is My Most Baffling Case!»
The screen's most daring sleuth!
Charlie Chan at his best in his most thrilling adventure!
THE MASTER OF MYSTERY EXPOSES A GENIUS OF CRIME! (original print ad - all caps)
It's The HEIGHT of FRIGHT! (original poster)
There's TERROR In Every Clue!
Death lurks at every step...as your oriental super-sleuth stalks a desperate killer -- below the surface of the earth!
Death rides the clouds
THE MYSTERY OF THE ALPHABET MURDER CASE! (original ad - all caps)
THE RIDDLE OF THE "KNIVES OF DEATH!" (original print ad - all caps)