Friday the 13th Part III is a 1982 novelization of the film of the same name written by Michael Avallone and published by Tower & Leisure Sales Co.
Official Summary Edit
The book that takes you from the edge of your seat to the edge of madness!
He lies in wait. Patiently. Quietly. Ready to strike. As darkness settles over the forest, the victims enter his lair. And one by one they die!