Shh... We Are A Secret

Vincent's father is remarrying, to a widow with a daughter, and Vincent is furious about it. He is drinking in a bar the night before when he sees a woman being handed over to a thug by her own boyfriend, who has sold her, and he steps in. Her name is Fiona. The next day, at his father's wedding, Vincent watches Fiona walk in and learns she is about to become his stepsister. He decides mother and daughter are after the family's money and sets out to make Fiona's life in the house unbearable enough that both of them leave. The household has its own currents already: money and control in play, relatives who are willing to betray each other for a share of it. What grows between Vincent and Fiona while he is supposedly driving her out is the one thing neither of them can let the family see, and both of them start spending everything they have to keep it covered and to keep each other standing.