Don't be deceived by the title, this fourth film in the Friday the 13th saga is far from the final chapter.
Picking up directly after part 3, all the bodies are collected up and taken to the local morgue. However, Jason isn't really dead (of course) and at the appropriate moment, arms himself with a surgical hacksaw and scalpel, and promptly does away with the 2 mortuary staff in one of the bloodiest killings of the entire series. Before heading back to Crystal Lake.
Carrying on where he left off, he comes across a couple of lakeside homes a bit further round the Lake and proceeds to do away with the teenagers partying at the cabin, hacking, slashing and dismembering them in loving detail!!!.
But, when he turns his attention to the house opposite, where the Jarvis family are staying. Young 12 year old horror enthusiast Tommy (Corey Feldman) knows how to play him at his own game, leading to a brutal and bloody climax.
This is, in my view, the best of the early sequels and definitely better than any of the subsequent sequels that followed. Fast paced, with plenty of blood and guts. This is a gore lovers delight, the scenes with the surgical hacksaw and the 'machete slide' being particularly memorable.
Bloody good fun!!!