Berkley Publishing Corporation, 1964 & 1965. Contains the books: Dangerous by Nature / With Intent to Deceive / Not Negotiable. All three are first printings of this edition.
Good. All three books have mild to moderate edge wear, cover scuffing, corner and spine creases, and tanning pages. Not Negotiable & Dangerous by Nature both have leaning/creased spines. Pages are clean and unmarked save for a small "25" written on first page of Not Negotiable. Mild chipping and discolored areas on the backs of books.