Sit back and relax.
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 Screen's No. 1 Sleuth Meets His Deadliest Adversary!
It's The HEIGHT of FRIGHT! (original poster)
There's TERROR In Every Clue!
Death rides the clouds
THE MYSTERY OF THE ALPHABET MURDER CASE! (original ad - all caps)
Death lurks at every step...as your oriental super-sleuth stalks a desperate killer -- below the surface of the earth!
THE RIDDLE OF THE "KNIVES OF DEATH!" (original print ad - all caps)
Sometimes you have to do it yourself!