In the opening credits: The Monster - ?
The opening credits say "Based upon the composition by John L. Balderston", without elaborating on what "Based upon the composition" really means, especially in this case, where there is already one original writer (Mrs. Percy Bysshe Shelley) credited, along with a playwright, two screenwriters, and one scenario editor.
The closing credits start with "A GOOD CAST IS WORTH REPEATING..." The first four actors' names are listed in all caps-sans serif font with the "S" in John Boles and Boris Karloff plus in CAST and IS tilted to the right 45 degrees. The remaining five cast members have their names listed in Serif font with both Caps and lower case letters.