What puzzled me was why the tech billionaire husband (Jesse Plemons) and his wife (Lily Collins) kept bidding up in the hostage negotiation with their tormentor (Jason Segel). That only made sense to me in the context of possibly keeping the home invader engaged enough to keep him from killing the couple. A clue to the resolution of the story comes when the tech guy calls his secretary and surreptitiously mentions that he's with his wife, and not 'Debbie'. Apparently overheard by the wife, she readily takes to her husband's suggestion that she make an evasive play for the attacker. Over the course of the story, a bit of Stockholm Syndrome develops between the wife and the thief, and comes a point when she almost defends him. This after an untimely visit from the couple's gardener ends in tragedy as he kills himself trying to escape in what came across as an extremely awkward death scene. The film's hour and a half run time is stretched by the lengthy dialog among the principals, and the excruciating wait for the hostage money to arrive. I fully expected the wife to be the deciding factor in the resolution of the story, but didn't see her killing the husband, even with the growing disdain between them. Though the circumstances of the forced entry by the intruder made him a convenient scapegoat for the murder, while she got to keep a whole lot more than the five hundred grand as the untimely widow.
Review of Windfall
