I just finished watching a movie titled, "The Neighbor in the Window".
Based on a true story, it was about a neighbour who made trouble for any family who moved into a particular house in the neighbourhood. She'd start of all sweet and caring, but started copying the lady of the house's clothes and jewellery, told her outlandish lies, reported her to welfare services (claiming that they were neglecting their child), bought a car exactly like hers, laid in wait for the lady of the house to come home then jumped out in front of her car, leading to a court case ... it was very intriguing!
It aired on Lifetime (US movie network) in February; I watched it on TVNZ On Demand.