As another reviewer noted, the hyped "Rankin cluster phenomenon" appears to be total BS. The movie overall has a bit of interest and a few memorable moments.
The first story involves a prank that goes horribly wrong and costs a young man his life, so his witchy mother (in the film's most memorable scene) lays a curse on them at the funeral, although she's never seen to curse the person truly responsible for her son's death. And the guys responsible all die in "accidents" on schedule...
The second story involves a mysterious hole in the ground that appears on a rural farm in the early 20th century. It's just suddenly there one morning. Smoke roils out of it and weird sounds are heard. A local farmer is lowered into it....
The third is the weakest, a rehash of the tired "Phantom Hitchhiker" story that was already a cliché decades before this film was made.
The biggest weakness is that there's so little substance to these stories. Scenes are played over and over and over in obvious attempts to pad it out to feature length. Every story is supposedly based on a "true story" although it seems to either be urban legends or made up from whole cloth. Another amusing bit is in the third story, which has flashbacks to the 20s, and in those scenes were shown a wealthy stylish girl who has long flowing hair...something totally out of whack, as stylish girls of the 20s had bobbed hair! (Of course, by the 70s, long flowing hair was stylish again...) I saw this on a local station back in the 70s or early 80s, and finally came across it again on YouTube. It's cheap hokum, never particularly scary or disturbing, sloppily written and badly edited. Watching it again I can't help but wonder if it was meant to be the pilot for a TV series. It's amusing when one is nostalgic for cheap 70s horror, but ultimately it fails because of the clichéd nature of the stories (except the second one) and the obvious padding. Something with a bit more imagination and more willing to have fun with the material, and even take some liberties with the urban legends, would have been much more enjoyable. The music over the opening credits is memorable, though.
