Own the rights?
This was set back in 1962 and is in black and white. There's only a few hints of blood. No gore.The whole film though is quite intense.
None.
There are a bit of intense scenes like a guy chasing a girl, a guy repeatedly tries drowning a guy or two (I he actually succeeds in one), and lots of other intense scenes as a guy who was in jail for 8 years is now after the family of the dad who put him in there.