Red Herring Without Mustard

Flavia had asked the old Gypsy woman to tell her fortune, but never expected to stumble across the poor soul, bludgeoned in the wee hours in her own caravan. Was this an act of retribution by those convinced that the soothsayer had abducted a local child years ago? Certainly Flavia understands the bliss of settling scores, revenge is a delightful pastime when one has two odious older sisters. But how could this crime be connected to the missing baby? Had it something to do with the weird sect who met at the river to practice their secret rites?