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!
Death rides the clouds
The Screen's No. 1 Sleuth Meets His Deadliest Adversary!
THE RIDDLE OF THE "KNIVES OF DEATH!" (original print ad - all caps)
There's TERROR In Every Clue!
It's The HEIGHT of FRIGHT! (original poster)
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!
Sometimes you have to do it yourself!