Terror Is a Man

Terror Is a Man is a 1959 film about a mad scientist who transforms a panther into a man-like creature that escapes and goes on a murderous rampage.
 * Directed by Gerardo de León. Written by Paul Harber, based on The Island of Doctor Moreau by H. G. Wells.

SEE! Body Snatchers! Cruel Beauties! Blood-curdling experiments (taglines)

Dialogue

 * Dr. Charles Girard: To bring about the modification of a species, but a modification to such a degree that the subject will lose the characteristics of its own species and take on those of another. Do you understand?
 * William Fitzgerald: I think so.
 * Dr. Charles Girard: Oh, I don't mean surface or topographical changes, but basic modifications.

Taglines

 * It Will Scare the Pure Yell Out of You!
 * For People With NERVES Of Iron Only!
 * SEE! Body Snatchers! Cruel Beauties! Blood-curdling experiments
 * More horrifying than FRANKENSTEIN! More Terrifying Than DRACULA!
 * A unique experience in motion picture terror!

Cast

 * Francis Lederer — Dr. Charles Girard
 * Greta Thyssen — Frances Girard
 * Richard Derr — William Fitzgerald
 * Oscar Keesee — Walter Perrera