Moon of the Wolf (1972)

After several locals are viciously murdered, a Louisiana sheriff starts to suspect he may be dealing with a werewolf.

Director:

 Daniel Petrie

Writers:

 Alvin Sapinsley (teleplay), Leslie H. Whitten(novel)

Stars:

 David Janssen, Barbara Rush, Bradford Dillman - via IMDB 

https://archive.org/details/MoonoftheWolf_