The Killing Kind (1973) 
John Savage stars as the sociopathic sexually repressed Terry Lambert, who on being released from prison on a rape charge into the care of his over-bearing mother starts to murder his way through the local town's female population.
The thinnest of plots is overcome by a stellar cast and a rather grimy vein of sleaze running throughout as with each flashback or kill we start to build up a picture of Terry. Ann Sothern puts on a good performance as Terry's lonely, coddling mother who is a little too attached to her son for comfort at times... however, it is Savage's intense performance which really makes the film stand-out above similar exploitative fare of the era and in turn makes for a pretty enjoyable time.
Originally posted here:
Nightmare USA Films Discussion Thread