Horror movies are closely associated with rapid succession sequels than they are legacy sequels. (How many years did we have a new “Saw” and/or “Paranormal Activity” sequel to look forward to?) But there are still a fair amount of legacy horror sequels – follow-ups that take much longer to marinate than the traditional sequel – and these are the ones that were definitely worth the wait.
Universal
“Psycho II” (1983)
The first true legacy horror sequel was a follow-up...