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