The 1980 Crime Dossier Who Killed Robert Prentice?

Another fabulous book from my personal collection.  This is a crime dossier by Dennis Wheatley, published in 1980 by Mayflower Books.  It contains 100+ pages with “evidence” that you can use to solve the mystery.  If you’re not a great detective, you’ll find the solution in a sealed section inside the back cover.  This softcover dossier has not been used, so it is in perfect condition, but because it’s 45 years old, the dust jacket shows some age.  Measures 8.5” x 10.25”.