Crazy for speed and driving for revenge!
Death rides the clouds
THE MASTER OF MYSTERY EXPOSES A GENIUS OF CRIME! (original print ad - all caps)
A Dealy Formula For Murder! (original poster)
Help! Help! They're loose again!
IS THIS BLUE-BLOODED BEAUTY A COLD-BLOODED MURDERESS? (original ad - all caps)
Was It a Wolf, Dog or Fiend in Human shape?
Alimony racketeers prey on innocent dupes!
Before or Later ... However I Will Kill You!
UK Police Procedural