简介：Foursistersreluctantlyreturnhometothecountrytovisitthereailing,embitteredfatheroverChristmas.Theirfatherbelievesthathiscurrentwifehastriedtopoisonhim,butDr.Lindsay,thelocalphysician,andthesistersdisagree.Thenastormcausestheroadstobefloodedandthetelephonelinestonotwork.Soonitbecomesclearthatsomeonewantstokillthefamily,aswell,whenoneofthemisfoundmurdered.OnesisterthentriestorunthroughthewoodsonedaytoreachSheriffNolanforhelp.Butshehasherownencounter,assheseessomeonechasingherwhiledressedinalargeponchocarryingthepitchfork.Shereturnshome,onlytodiscovermoremurders.Theprimesuspectbecomesfather'swife,butwasitsomeoneelse?…