While the Muldoons want to close the case, Harry cannot let Percy’s death go.
Harry goes to the mainland to find more info on Percy and discovers deep, dividing secrets in the Muldoon family.
Sometimes sequels improve on the original, sometimes they’re only a bit better. Other times, they’re rougher than that.
If ever there were a Lovecraftian story not written by Lovecraft, DARK WATERS is it, certainly.