Trog (1970)
Anthropologist Dr Brockton unearths a primitive troglodyte — an Ice Age 'missing link': half-caveman, half-ape — in a local cave. Through experimentation, she manages to communicate with and domesticate him before he's released by an irate land developer and goes on a rampage, terrorising the local citizenry.
Directed by: Freddie Francis
Starring: Joan Crawford, Michael Gough, Bernard Kay, Kim Braden, David Griffin, John Hamill
Links: IMDb, Movie posters, Movie stills