Ugh.
Well, Rosanna Arquette is Dana, a rich actress or something. (My copy of this is dubbed in German, so you'll have to bear with me.) Her cute blonde teenage daughter Traci wants her exclusive attention, which she apparently gets only when there's a crisis. So Traci has an anxiety attack one night while her mom is getting ready to go off to a big award ceremony. She gets 2 minutes' worth of attention that way, but then mom takes off without her, so Traci kills some guy who's in the house. (Doctor? Butler? Father? You figure it out.)
Dana takes the heat for the murder and does time in prison while Traci is at a boarding school, where she falls in love with a teacher. But the teacher has a boyfriend, so Traci kills the boyfriend. By the way, the teacher is a woman and I'm not quite sure what I mean by "falls in love with." There are indications elsewhere in the film that Traci is either gay or bisexual, but you never really know what's going on with her. Mainly, Traci adopted the teacher as a substitute mom... and Traci don't share her mom with nobody.
Anyways, Dana's out of prison and has bought a big ole estate with a vinyard. Carl (Prochnow) is in charge of the grape-growing and wine production. Right away Traci has a problem with the maid in the house - just because she's there, apparently; later she has a problem with Carl's younger brother Johnny who shows up and hits on her first but then decides to have an affair with Dana.
Everybody gets rained on. Traci sets the house on fire. Then she kills the maid. Then she tries to kill Carl by whacking him on the head, causing him to tumble into a big vat of wine. Then she kills Johnny. Then she tries to kill her mom. Then she tries to kill herself, but she only gets paralyzed so at the end she's just a sort of psychotic vegetable in a wheelchair.
The end.
The rain and the wine-dunking are pretty good, but other than that and a very brief tussle with Johnny at one point, Prochnow just doesn't do much here even though he gets a fair amount of screen time. The acting by all the cast is adequate, but with no point to make and no serious attempt at character development there's nothing to be gotten out of this movie.
I will give it a prize, though: Most Overused Hackneyed Plot Device. There are so many "spying" moments in this that I finally started laughing every time it occurred. Whenever something happened that someone wasn't supposed to see, that someone was always peeking through a window or peering out from behind a plant.
Bottom line... it made me want to re-watch Der Blonde Affe.